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There are the mainstream headphones for your average consumers, and there are the high-fidelity headphones for the audiophiles in all of us. Headphone amplifiers are often required by these high-end and expensive headphones to truly unlock their potential and deliver the best of the best in sound quality to the ears. Read on below to find out about these headphone amplifiers.

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AudioQuest DragonFly Red Portable Headphone Amplifier & USB DAC at 1643.00 HKD from TREOO.com
AudioQuest DragonFly Red Portable Headphone Amplifier & USB DAC
HK$ 1,643.00
The Original DragonFly Launched in 2012, press and public alike have enthusiastically embraced AudioQuest’s multi-award-winning DragonFly USB digital-to-analog converter/preamp/headphone amp as the rare audio product that bridges the gap between die-hard audiophiles and mainstream music lovers. DragonFly plugs into a computer’s USB port to bypass the computer’s compromised audio circuitry and deliver cleaner, clearer, more naturally beautiful sound to headphones, powered speakers, and complete audio systems. Small, affordable, easy to use, and remarkably effective, DragonFly was named Stereophile’s 2012 “Computer Audio Component of the Year” and 2012 “Budget Component of the Year;” Tone Audio’s 2012 “Digital Product of the Year;” Computer Audiophile’s 2012 “Computer Audiophile Product of the Year;” AudioStream’s “Greatest Bits;” and What Hi-Fi?’s 2014 “Product of the Year.” Perhaps most memorably, DigitalAudioReview.net’s John Darko quipped: “A DAC with the DragonFly’s performance at the DragonFly’s price point is as rare as rocking horse sh*t.” We couldn’t have said it better. The Next Generation: DragonFly Black & DragonFly Red While the original DragonFly defined the market for micro-DACs, its USB power draw made it compatible with computers only. Music lovers have craved a more portable version—one that could be reliably used with Apple and Android smartphones and tablets. We’re delighted to present two new options that do just that: DragonFly Black and DragonFly Red. Convenience and performance are no longer mutually exclusive. With DragonFly Black and Red, any computer, laptop, tablet, or smartphone can be used as a true high-fidelity music player, allowing music lovers to enjoy beautiful sound wherever they go, whenever they please. AudioQuest, Gordon Rankin, and Microchip: A Beautiful Partnership AudioQuest and DragonFly designer Gordon Rankin worked alongside Microchip Technology to develop a new high-performance, full-speed USB microcontroller solution that delivers improved signal-to-noise ratio and significantly lower power consumption. Drawing 77% less current than the previous microcontroller, the new Microchip Pic32Mx microcontroller enables true compatibility with Apple and Android smartphones and tablets. Further, we simply cannot overstate the significance of Gordon Rankin’s contributions to AudioQuest. The new DragonFly models embody many of Gordon’s most innovative, creative, and elegant digital-audio solutions to date. Improved 32-Bit Digital Performance For greater overall performance, the new DragonFly models also incorporate improved 32-bit ESS Sabre DAC chips—the 9010 in Black and the higher-performance 9016 in Red—both of which employ minimum-phase filtering for naturally detailed, more authentic sound. While DragonFly Black uses the same high-quality headphone amp and analog volume control found in DragonFly v1.2, DragonFly Red includes the latest ESS headphone amp and a bit-perfect digital volume control that resides on the 9016 DAC chip itself—a sophisticated implementation that ensures maximum fidelity, dynamic contrast, and signal-to-noise ratio. DragonFly Black will output 1.2 volts—enough power to successfully drive all preamplifier input circuits and a wide range of today’s efficient headphones. Meanwhile, with its higher 2.1-volt output, DragonFly Red will be compatible with a wider range of headphones, including power-hungry, low-efficiency models. While the DAC chips we’ve selected are remarkably powerful and sophisticated, we’ve intentionally limited DragonFly Black and DragonFly Red’s processing capabilities to 24-bit/96kHz resolution. This makes using the DragonFlys as simple as it’s always been: they’re fully compatible with PCs without having to download and install new drivers. Most importantly, DragonFly is designed to honor the music you already own and love. Whether you’re listening to Spotify, YouTube, Tidal, ripped CDs, or state-of-the-art high-resolution files, DragonFly will deliver a more emotionally compelling and enjoyable experience. Free Desktop Application for Software Upgradability (for DragonFly Black and Red only) In addition, the new DragonFlys will be software upgradeable through a complimentary Windows or OS X desktop application. As new developments arise in music player applications, streaming protocols, or other associated software, DragonFly users will be able to incorporate those updates to their existing devices. Only the Beginning Introduced to the media at the 2016 Consumer Electronics Show, DragonFly Black and DragonFly Red were named “Stars of Ces” by What Hi-Fi? Magazine. But this is only the beginning. We look forward to building stronger, more meaningful connections between music enthusiasts and the artists, albums, songs, and videos they love. Our hope is that with DragonFly Black, DragonFly Red, and future AudioQuest digital products, more people than ever before can enjoy beautiful music—wherever they go, whenever they please.
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FiiO A3 Portable Headphone Amplifier - Black at 489.00 HKD from TREOO.com
FiiO A3 Portable Headphone Amplifier - Black
HK$ 489.00
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FiiO A1 Portable Headphone Amplifier at 270.00 HKD from TREOO.com
FiiO A1 Portable Headphone Amplifier
HK$ 270.00
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FiiO E10K Olympus2 Desktop Headphone Amplifier & USB DAC at 654.00 HKD from TREOO.com
FiiO E10K Olympus2 Desktop Headphone Amplifier & USB DAC
HK$ 654.00
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Chord Mojo Portable Headphone Amplifier & USB DAC at 5489.00 HKD from TREOO.com
Chord Mojo Portable Headphone Amplifier & USB DAC
HK$ 5,489.00
Chord Electronics is proud to introduce Mojo, the ultimate DAC/Headphone Amplifier for your smartphone. Simply connect Mojo to your iPhone, Android phone, PC, or Mac, plug in your headphones and you can experience crystal clear audio the way you would hear it in the recording studio. Designed and built in England, Mojo brings studio quality sound to your pocket and is the ultimate, truly portable, DAC/Amp. Mojo is built upon the multi-award winning Hugo platform and will afford the listener with Hugo like performance for a fraction of the cost. Inside Mojo is a massively powerful headphone amplifier that will deliver crystal clear audio whether you use in-ear buds or large studio cans, it will even play almost any audio file that you can find, up to 768kHz 32bit, and quad DSD 256. Thanks to the latest Li-Po technology, Mojo is able to charge to full in only four hours and will give between eight to ten hours continuous use. You may think that good quality headphones are the be all and end all, but they are just the beginning. By using Mojo between your smartphone and headphones you can experience crystal clear audio the way you would hear it in the recording studio. Mojo - The Game Has Changed.
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Audio-Technica Ath-Ha21 Desktop Headphone Amplifier at 1088.00 HKD from TREOO.com
Audio-Technica Ath-Ha21 Desktop Headphone Amplifier
HK$ 1,088.00
Latest low cost desktop amplifier from audio technica, capable of 300mW output with a low harmonic distortion of 0.0008%, the Ath-Ha21 is a cost effective solution for your home amplifier needs.
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FiiO A3 Portable Headphone Amplifier - Silver at 489.00 HKD from TREOO.com
FiiO A3 Portable Headphone Amplifier - Silver
HK$ 489.00
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FiiO E09K Qogir Desktop Headphone Amplifier at 984.00 HKD from TREOO.com
FiiO E09K Qogir Desktop Headphone Amplifier
HK$ 984.00
The FiiO E09K Desktop Headphone Amplifier with E17 Dock In is designed to work with the FiiO E7, E07K and the E17. It features dual-channel power outputs for both 1/4" and 1/8" headphone plugs, as well as an additional RCA L/R audio output, USB interface and line input. The amplifier features a Texas Instruments main power amp integrated circuit with a low noise level, low distortion and a high conversion rate. The E09K is cleverly designed with an E17 dock for using the line out signal from the Fiio E17 docking port. This provides better sound quality and makes the amp able to drive high impedance or low sensitivity headphones -- giving you the clarity and punch to make your music sound alive and vibrant. Plus, it lets you charge and sync the E17 with your computer as well. The E09K even has a Low/High gain section switch, LED power indicator and a built-in power converter to meet the demands of high dynamic signal processing. Based on the FiiO E9, this updated version allows for synchronously working for power supply and turn on/off. When using with E17, it only needs to turn on/off E09K, and E17 will turn on/off at the same time. When selecting AUX IN and Dock IN signal of E09K, there is no need to take out Dock from E17, you just need to adjust the switch. The Eo9K features reliable, durable RCA gold-plated terminals rather than 3.5mm connectors. Other than these updates, there is no tone quality difference between FiiO's E09K and earlier E9. Note: The FiiO E09K is the newest batch which does NOT have compatibility issues with the FiiO E7 as it may have been stated in some product reviews of the E09K.
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FiiO E17K Alpen 2 Portable Headphone Amplifier & USB DAC at 984.00 HKD from TREOO.com
FiiO E17K Alpen 2 Portable Headphone Amplifier & USB DAC
HK$ 984.00
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Creative Sound Blaster E5 Portable Headphone Amplifier & USB DAC at 1478.00 HKD from TREOO.com
Creative Sound Blaster E5 Portable Headphone Amplifier & USB DAC
HK$ 1,478.00
High Resolution USB DAC and Portable Headphone Amplifier The Sound Blaster E5 is a 24-bit/192kHz high resolution USB DAC and portable headphone amplifier. Built with precision audiophile components, a best-in-class 600 ohm headphone amplifier and aptX technology for Bluetooth, the Sound Blaster E5 is the perfect audio component for music lovers, whether they are on the move or beside their PC/Mac, smart phones, or tablets. Designed for the Audiophile in You The Sound Blaster E5 is designed from the ground up, to reproduce high-fidelity audio with minimum distortion and noise. It is built on the flagship Cirrus Logic Cs4398 Digital-Analogue Converter (Dac), with an impressively high 120dB signal-to-noise ratio (Snr) that supports sample rates of up to 24-bit/192kHz resolution. Sound Blaster E5 is able to decode audio files ranging from MP3s and CDs (16-bit/44kHz) to high-resolution 24-bit/192kHz files, be it from your PC / Mac or other smart devices. Powers High-impedance Headphones, with a Dual Gain Switch A best-in-class Texas Instrument Ti6120A2 headphone amplifier enables you to power any of the headphones available in the market, giving you clarity, details and a total harmonic distortion value plus noise (Thd+N) of Very Low Output Impedance - 2.2 Ohm Headphones, like consumer speakers, have defined classes allowing manufacturers of amplifiers, receivers, etc to design with those standards in mind. Generally different types of headphone fall between 16-32 ohm for consumer or home applications and 600 ohm for broadcast applications. When designing the Sound Blaster E5, our engineers pushed boundaries by specially engineering the headphone amplifier circuit with a very low output impedance of 2.2 ohm. This allows the Sound Blaster E5 to accommodate both extreme ends of headphones in the market while minimizing the introduction of distortion to audio content caused by variance in frequency response. Dual Orientation Recording with CrystalVoice Technology The Sound Blaster E5 records via built-in dual microphones with auto-orientation sensor that reacts to landscape or portrait orientation, allowing stereo recording to smartphones or tablets. The Sound Blaster E5 also features CrystalVoice Technology, a suite of audio recording enhancements built into the digital signal processor (Dsp) that reduces noise and provides for clear calls and voice recordings, be it from mobile phones or via Skype conferencing. Communication profiles such as A2Dp, HFP and Avrcp are supported for voice calls. Hi-Fi Companion for Your Mobile Devices You can play digital audio direct from your iOS or Android* device via the Sound Blaster E5 to your headphones. Digital audio signals are sent from the device directly to the Sound Blaster E5, which decodes them without any degradation in audio quality. What you get is audio playback at its highest fidelity. 7.1 Virtual Surround Support Sound Blaster E5 supports virtual 7.1 channel audio input signals to deliver realistic gaming effects and audio cues with perfect accuracy and positioning via your headphones. Sound Blaster E5 also comes with SBX Pro Studio for immersive audio realism. It can be switched off when listening to high-quality lossless audio, so that you may get to enjoy the songs unprocessed, in the way you desire. Dual Headphone Outputs Dual headphone output lets you and your loved one enjoy your favorite tracks simultaneously! Stream Music Wirelessly via Bluetooth The Sound Blaster E5 features Bluetooth 4.1 with NFC technology for one-touch, fuss-free Bluetooth pairing. A wide range of Bluetooth streaming codecs such as aptX Low Latency, AAC and SBC which enhances audio quality wirelessly, are also supported. Multiple Input Connectivity Options Sound Blaster E5 sports a Cirrus Logic Cs5361 114 dB, 192kHz stereo Analog-to-Digital Converter (Adc) that allows audio recordings of the highest fidelity to your device, be it PC, Mac or even smart devices. In addition, Optical I/O supplements the Line I/O to offer unparalleled connectivity options from and to digital and analog sources, such as today's gaming console, high-definition media player and even modern TVs. Jitter-free Audio Playback The Sound Blaster E5 supports asynchronous mode which is superior to other USB data transfer modes. Data is 'pulled' from the computer under the control of the Sound Blaster E5, not 'pushed' to the Dac. This allows the DAC to process the digital signal at its optimal timing, thereby ensuring the lowest possible output jitter and best possible sound quality with minimal distortion. MFi-certified for Apple iOS The Sound Blaster E5 is a MFi-approved product, designed to work seamlessly with iPod, iPhone, or iPad, and has been certified to meet Apple's performance standards. Long Battery Life The Sound Blaster E5 is equipped with a 3200mAh battery, which offers up to 8 hours* of playback, even when using the Bluetooth connectivity option. Sound Blaster E5 also allows Android users to charge their smart phones while on the go. *Actual battery life will vary with usage scenarios, settings and environmental conditions. Optimize Sound with the SB-Axx1 Multi-Core Audio Processor Incorporated into Sound Blaster E5 is a SB-Axx1 multi-core processor, designed to improve audio experiences, such as increasing the depth and spatial width of the audio you hear, be it in movies or gaming. The SB-Axx1 processor also saves all your audio EQ settings so that you can enjoy your personalized sound, whether the Sound Blaster E5 is connected to a computer, or as a stand-alone headphone amplifier. Backed by Multi-platform Software for iOS and Android Get extensive audio control right in the palm of your hand with the free Sound Blaster Central app for iOS and Android devices. Use it to wirelessly customize all your Sound Blaster audio E5 settings so you hear audio, just the way you want it.
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 JDS Labs CMoyBB v2.03 Portable Headphone Amplifier (Demo Unit) at 687.00 HKD from TREOO.com
JDS Labs CMoyBB v2.03 Portable Headphone Amplifier (Demo Unit)
HK$ 687.00
Exclusive Bass Boost Switch The cMoyBB ships with an internal bass boost toggle switch. Switched off, the original, flat audio signal is amplified. Switched on, bass is increased up to 9.4 dB, just shy of a perceived 2x increase in bass volume. Do-it-yourself builders have the option to substitute the bass boost toggle switch for a bass boost control knob. Printed Circuit Board (Pcb) Most cMoys are built on protoboard and use thin wires to transfer the audio signal, making them prone to interference and signal degradation. The cMoyBB v2.03 uses a top-layer ground plane and tightly optimized signal traces, easily outperforming hand-soldered protoboard connections. Proprietary software was used during design of the PCB to check for proper impedance characteristics and negligible crosstalk. Such attention to detail cannot be achieved in protoboard amplifiers, or even in circuit boards designed by most hobbyists. Not sure what all of this means? Check out the cMoyBB reviews. Power System A Texas Instruments Tle2426 precision rail splitter and 25V, low noise Nichicon 470 uF capacitor are used to eliminate the unbalanced resistor divider power system found in standard cMoys. The cMoyBB handles more than double the voltage of most cMoys, meaning the dynamic range of high impedance headphones can be extended even further when using a high voltage DC adapter. Version 2.03 optionally allows for a second Tle2426 rail splitter, giving the cMoyBB more current handling capability than ever! The cMoyBB v2.03 also employs ceramic decoupling capacitors on all IC power pins. Decoupling helps to prevent IC supply ringing, which significantly enhances opamp stability and sound quality. DC Auxiliary Power Input Jack Any regulated 9-24V DC power adapter with a 1.3mm x 3.5mm DC jack can be used to power the cMoyBB amplifier. Connecting a DC power adapter to a non-rechargeable cMoyBB automatically and safely disconnects the 9V battery. cMoyBBs equipped with NiMH recharging circuitry use the same jack to charge the battery. The cMoyBB can be used while charging! JDS Labs does not sell or include Ac/dc adapters. However, a DC adapter can be purchased for as little as $10 (Usd) in North America. See Instructions for details. Enclosure The cMoyBB v2.03 is cased inside of a brand new* Altoids® Peppermint tin, protecting the circuit from some forms of external EMI / RF interference. Foam support keeps the battery securely in place. Other mint tins are sometimes in stock. Contact us if you have something specific in mind. *Despite each tin being brand new, Altoids ® tins occasionally have some sort of scratch or dent (not always!). Additionally, you should anticipate minor jack mounting imperfections due to the hand built nature of the product. Please excuse these possible minor cosmetic defects. Options: In addition to gain adjustment, the cMoyBB can be assembled in four ways: Standard, Non-rechargeable, 1x9V battery. Best for most users. External DC jack can be used to power the amplifier; does not charge battery. Standard, Non-rechargeable, 2x9V batteries (18V). Recommended for high volume listening with 120+ ohm headphones. Rechargeable, 1x9 battery. Ideal for portable use of most headphones. Includes 1x9V Tenergy low self-discharge NiMH battery. Requires a 10V+ Ac/dc adapter (not included)! Rechargeable, 2x9 batteries. Recommended for portable use of 120+ ohm headphones. Includes 2x9V Tenergy low self-discharge NiMH batteries. Requires a 19V+ Ac/dc adapter (not included)!
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NuForce Mobile Music Pump Portable Headphone Amplifier - Black at 435.00 HKD from TREOO.com
NuForce Mobile Music Pump Portable Headphone Amplifier - Black
HK$ 435.00
The NuForce Mobile Music Pump (Mmp) is a portable headphone amplifier designed to make your music truly come alive… wherever you go. The fact is that the majority of hand-held audio playback devices simply aren't capable of adequately powering many of today's quality headphones. This is because headphones present a definite challenge to amplifier designers. There are two basic types: the Over-Ear (Oe) in general use in the recording industry, and the smaller In-Ear (Ie), a.k.a. "ear-bud" type commonly used with portable devices such as MP3 players. Given the range of available OE and IE headphones, in attempting to accommodate them all, your mobile device’s headphone output is optimized for none. Typically, OE types exhibit sensitivities of about 100dB/mW, whereas IE devices can be 10dB higher or more, e.g., 110dB/mW. Assuming a 10dB difference, the lower sensitivity OE headphones require ten times more power to achieve the same volume as the IE type. If you’re using OE headphones, you’ll really appreciate the NuForce MMP power capability. Your headphones will sound distinctly clearer and more natural. Just connect the MMP to the headphone output of your MP3 player, Smartphone, iDevice, etc. and finally start experiencing the higher level of performance your headphones were always capable of.
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FiiO E02i Rocky Portable Smartphone Headphone Amplifier - Black at 220.00 HKD from TREOO.com
FiiO E02i Rocky Portable Smartphone Headphone Amplifier - Black
HK$ 220.00
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OPPO Ha-1 Wireless Bluetooth Receiver, Desktop Headphone Amplifier & USB DAC - Silver at 9807.00 HKD from TREOO.com
OPPO Ha-1 Wireless Bluetooth Receiver, Desktop Headphone Amplifier & USB DAC - Silver
HK$ 9,807.00
The analog audio section of the Ha-1 is a fully balanced design with an emphasis on keeping the audio signal in the analog domain once it leaves the Dac. The Ha-1 is anchored by a hefty toroidal power transformer, and linear power regulators and filters with custom made capacitors ensure that the headphone amplifier has a clean power source with plenty of reserve energy. The fully balanced Class A power amplification section uses hand-picked and paired discrete components to ensure symmetry, and a motor-driven precision volume control knob allows for both manual and remote control volume adjustment while keeping the audio in a pure analog audio path.
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 Schiit Audio Vali 2 Desktop Headphone Amplifier at 1918.00 HKD from TREOO.com
Schiit Audio Vali 2 Desktop Headphone Amplifier
HK$ 1,918.00
Welcome to the most affordable serious tube hybrid amp on the planet—with performance and versatility that eclipse amps costing much, much more. The all-new Vali 2 is a great way to get started with tube sound, without needing a second mortgage! The Most Serious Tube Design—Far Beyond its Price Some inexpensive (and not-so-inexpensive) tube amps don’t use tubes to their full potential, “starving” them with low plate voltages or using op-amp buffers for output. Not Vali 2. Vali 2 uses a unique, class-leading power supply that gives us 60V on the plate. Combined with a fully discrete, current-mode noninverting hybrid topology, Vali 2 redefines what you can expect from an affordable tube amp, even at 2x its price. Roll Your Own Sound Vali 2 is supplied with a single NOS 6Bz7 tube, which can be swapped for the same tubes we use in Lyr 2 and Mjolnir 2—feel free to use virtually any Ecc88, 6922, 6Dj8, 2492, etc to “roll” the sound to your own preference. Plus, you only need a single tube, so rolling is easy and more affordable! Serious Power, Gain Switching, Preamp Outputs Vali delivers 1W into 32 ohms for hard-to-drive headphones—and; at the same time, offers a low gain mode for low-noise performance with sensitive headphones. You can also use the preamp outputs to add a tube preamp to your power amp or powered monitors. Made in Usa. Really. By “made in Usa;” we mean made in Usa. The vast majority of the total production cost of Vali 2—chassis; boards, assembly, etc—goes to US companies manufacturing in the US. Our board house is 20 minutes away from our office in Newhall. Our chassis guys are just over the hill in the Valley. Yep, the wall wart is from China, but there you go. There is some give and take to reach this price point.
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Alpha Design Labs Gt40 Desktop Headphone Amplifier & USB DAC with Phono Stage at 3984.00 HKD from TREOO.com
Alpha Design Labs Gt40 Desktop Headphone Amplifier & USB DAC with Phono Stage
HK$ 3,984.00
The Gt40 is finally here, built for enthusiasts with growing music collections on their computer hard drives. It’s a high performance 24-bits/96kHz USB DAC that’s amazingly affordable. Looking to convert your LPs or other analog sources to digital? The Gt40 will take you to the podium with every album you archive. The seriously-shielded audiophile-grade Gt40 features a low-latency USB 2.0 audio driver that plays and records at 96 kHz. A likely first for this category, the Gt40 includes a built-in low-noise MM / MC phono preamp! Record your favorite vinyl to hard disk via the USB output. The ADL Gt40 features L/R analog outputs, and switchable line or phono inputs with a vivid, captivating sound that is simply unheard of in this category. The ADL Gt40 (wired with Furutech’s GT2 USB cable of course!) brings Furutech’s signature sound -- smooth, detailed clarity -- to desktop systems, especially with high resolution 24-bits/96kHz files, but even 16-bit/44.1kHz files sound impeccable and very musical. Gt40 has no setting for gain to match different impedance headphones. We recommend using 16 ohm to 300 ohm impedance headphones.
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NuForce Mobile Music Pump Portable Headphone Amplifier - White at 435.00 HKD from TREOO.com
NuForce Mobile Music Pump Portable Headphone Amplifier - White
HK$ 435.00
The NuForce Mobile Music Pump (Mmp) is a portable headphone amplifier designed to make your music truly come alive… wherever you go. The fact is that the majority of hand-held audio playback devices simply aren't capable of adequately powering many of today's quality headphones. This is because headphones present a definite challenge to amplifier designers. There are two basic types: the Over-Ear (Oe) in general use in the recording industry, and the smaller In-Ear (Ie), a.k.a. "ear-bud" type commonly used with portable devices such as MP3 players. Given the range of available OE and IE headphones, in attempting to accommodate them all, your mobile device’s headphone output is optimized for none. Typically, OE types exhibit sensitivities of about 100dB/mW, whereas IE devices can be 10dB higher or more, e.g., 110dB/mW. Assuming a 10dB difference, the lower sensitivity OE headphones require ten times more power to achieve the same volume as the IE type. If you’re using OE headphones, you’ll really appreciate the NuForce MMP power capability. Your headphones will sound distinctly clearer and more natural. Just connect the MMP to the headphone output of your MP3 player, Smartphone, iDevice, etc. and finally start experiencing the higher level of performance your headphones were always capable of.
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Magic Shozy Portable Headphone Amplifier & USB DAC at 3182.00 HKD from TREOO.com
Magic Shozy Portable Headphone Amplifier & USB DAC
HK$ 3,182.00
The Shozy Magic offers meticulous build quality and impeccable tuning in a very small footprint.
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iBasso D42 Mamba Portable Headphone Amplifier & USB DAC at 1643.00 HKD from TREOO.com
iBasso D42 Mamba Portable Headphone Amplifier & USB DAC
HK$ 1,643.00
The D42 is a refinement of the well received D4. While we keep the AMP section exactly same as the original D4, we improved the DAC section by using better components. The enclosure is very different to the D4's. It is a well made enclosure with hairline finish.
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FiiO E01 Alisan Portable Headphone Amplifier for iPhone/iPod - Black at 176.00 HKD from TREOO.com
FiiO E01 Alisan Portable Headphone Amplifier for iPhone/iPod - Black
HK$ 176.00
The FiiO E01 Alisan (FiiO E1) Headphone Amplifier for iPod/iPhone with In-Line Remote Control is a headphone amplifier specifically designed for use with Apple's iPod and iPhone. It is the first headphone amplifier in the world with in-line remote control functions. The FiiO E01 has a built-in high quality headphone amplifier IC manufactured by Texas Instruments. The FiiO E01 uses the line out signal from the iPod/iPhone, so it provides better sound quality, and is able to drive high impedance or low sensitivity headphones! With the in-line control function, you can easily control the playback of the iPod/iPhone from the E01 Amplifier. Powered by the iPod or iPhone, the FiiO E01 requires no charging or batteries. The FiiO E01 will bring you better sound quality and a more convenient playback experience!
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 Lehmann Audio Linear Desktop Headphone Amplifier & USB DAC - Silver at 8791.00 HKD from TREOO.com
Lehmann Audio Linear Desktop Headphone Amplifier & USB DAC - Silver
HK$ 8,791.00
Already since 2004 the Linear has made all common headphones to shine at their very best. Extremely demanding users rely on our top model, from the West German Broadcasting Corporation to the audiophile Tacet label to Sennheiser's and AKG's headphone experts. It’s not without reason that the Linear belongs to the reference class in its genre. When you put on your headphones and load your favourite CD, the Linear will give rise to wonderful worlds before your mind’s eye. Physical, punchy lows and a delicate resolution reveal your favourite tracks in all their glory over the entire frequency bandwidth. Carefully selected components and an extremely sophisticated circuit design establish the foundation of our number on. "The best we've come across." — What Hi-Fi A universal champion With three gain settings it gives you an impressive listening pleasure, keeping an eye on your needs anytime – and this using a vast array of headphones on the most diverse sound sources. In this context we have, of course, taken into account the varying performance requirements and sensitivity levels of the headphone types currently available on the market. If you want to enjoy your musical treasures via PC or iPad, the Linear with the optional USB feature offers the solution. And if you would like to share your joy at this quality of music reproduction with family and friends, our multiple test winner will be happy to feed two headphones at the same time. Of course, the listening enjoyment will remain equally fabulous then. The two parallel outputs of the discrete class A solid-state output stage.provide the basis of this double musical enjoyment. A propos: if you wish so, the Linear will also stimulate your active speakers to a stunning vitality. In every situation a magnificent sound, always striving for perfection – such is our Linear.
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FiiO E06 Fujiyama Portable Headphone Amplifier at 270.00 HKD from TREOO.com
FiiO E06 Fujiyama Portable Headphone Amplifier
HK$ 270.00
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FiiO E18 Kunlun Portable Headphone Amplifier & USB DAC for Android (Demo Unit) at 1369.00 HKD from TREOO.com
FiiO E18 Kunlun Portable Headphone Amplifier & USB DAC for Android (Demo Unit)
HK$ 1,369.00
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Beyerdynamic A2 Desktop Headphone Amplifier at 14829.00 HKD from TREOO.com
Beyerdynamic A2 Desktop Headphone Amplifier
HK$ 14,829.00
A Sound TO Rave About With its powerful and lively response, the A2 brings out the best performances from all dynamic headphones and supplies an excellent reproduction quality that is as close as possible to the original sound: From highs with a brilliant resolution and absolutely authentic mid-range to a deep, natural bass. Amazingly noise-free operation and precise control can be enjoyed via all headphones that are connected, regardless of their impedance. Fully Discrete AND Adjustable Selected, hand-assembled components and the discrete circuit design open up a richness of detail that is hard to beat. Due to the two headphone outputs, two people can enjoy their favourite music together and the sophisticated, intuitive operation of the A 2 fills with enthusiasm. Applications such as the volume can be precisely and infinitely adjusted via the convenient remote control. As a special highlight, the A2 is currently the only device on the market that provides separate adjustments for the impedance and sensitivity of the connected headphones as well as different levels of the audio sources. This means that headphones between 16 ohms and 600 ohms can be operated perfectly on the A 2 without distortion occurring at high levels. With the voltage selector switch the supply voltage can be adjusted to 110 - 120 V or 220 - 240 V, which allows the device to be used worldwide. Sophisticated Industrial Design Like its little brother, the A 20, the A 2 top-of-the-line model is based on a clearly structured, elegant design with smooth rounded housing edges without visible joints, screws or rivets made of anodised aluminium. Another special eye-catcher is the transparent charcoal-coloured glass panel, which is flush with the top surface, enabling you to look through the famous beyerdynamic sound-wave logo into the interior of the A2. LEDs spectacularly illuminate the circuit board in a warm light. Each A 2 is supplied with an extraordinary accessory, a rugged headphone stand made of aluminium. When it is attached to the device, it serves as a practical storage solution for the headphone keeping it ready at all times hanging over the device.
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FiiO E12Diy Limited Edition Portable Headphone Amplifier - Silver at 2193.00 HKD from TREOO.com
FiiO E12Diy Limited Edition Portable Headphone Amplifier - Silver
HK$ 2,193.00
Background: The release of FiiO E12 (flagship of portable amplifier) was welcomed by the market. However, for some customers who are eagerly to try on something new, the original operational amplifier--OP AMP (Opa1611+Lme49600) still can’t make them satisfied. At present, FiiO Company is not in the right place to offer customized service, and different combination of the OP AMP can hardly help the customers to find the most favorite one through the objective sound feelings. Yet, in order to show our appreciation to those old customers and bring more fun in enjoying music, we specially invest effort in developing the DIY version based on E12. We are expecting to offer more options to our customers with this higher playability platform. Quantity: 2000pcs at its most worldwide. (The program would be terminated if the reservations run less than 500.) Target customers: The following requirements are not non-negotiable, but it is Strongly suggested for those who are ready to reserve to read each item carefully in order to avoid any unpleasant purchase experience. 1. Have certain operational ability; Since the customers are required to replace the OP AMP with the help of our manual, we don’t suggest average user to purchase in order to avoid burnout caused by faulty operation. 2. Old users of FiiO who know well of its products and service; Owing to the high cost of the high quality audio OP (the supplier has no stocks available), we can only move to production process after got the Full Payment of reservation. The production cycle would be pretty long, and for now we are unable to promise a definite delivery date. That’s why we don’t suggest users to buy this item when they had never bought any FiiO products before, since we are afraid they would cancel the reservation due to impatience or lack of trust. 3. Willing to accept the terms without after-sales service; For the DIY version, since it is practical to open the case to replace the OP by the end-user, we can hardly tell whether the issue is out of quality or man-made problem. In order to avoid unpredictable loss, we would seal the fixed screws before sending out, once found opened, we would not provide related after-sales service. Features of the E12 Diy: 1. On one hand, reserves the fine and meticulous workmanship of its commercial edition; on the other hand, offers more different timbre and fun with different OP combination. 2. Canceled the Bass and Crossfeed function, which offers larger space regarding the inner wiring layout, thus get its performance greatly improved. 3. Reserves the excellent high voltage power supply circuit of E12, ensure to make the most of its high quality audio OP. 4. Reserves all kinds of protection circuits and USB smart fast charging of E12. As to normal DIY amplifier, audiophiles would not pay much attention to this kind of design, and lack conditions to use the MCU to fulfill this function. 5. All the components are purchased from the first-class agent in China of companies like TI, Adi, which definitely prevent getting fake products in the purchase of DIY
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Icon NuForce uDAC-2 Portable Headphone Amplifier & USB DAC - Black at 874.00 HKD from TREOO.com
Icon NuForce uDAC-2 Portable Headphone Amplifier & USB DAC - Black
HK$ 874.00
Advanced NuForce technology delivers highest-resolution audio for superior sound. If you own a laptop and love music, you need a NuForce uDAC-2. If you're a gamer, uDAC-2 brings realistic sound effects that put you in the game. The NuForce uDAC-2 is a high-performance, 24bit/96kHz USB Digital Audio Converter (Dac) that connects your personal computer's audio to your home stereo, desktop sound system, or headphones to deliver superior sound. It improves upon our original uDAC model by providing a highly linear Tocos volume control for improved channel tracking at low listening levels, a 24bit/96kHz USB Dac, and an improved headphone amp. Powerful sound in a small, affordable package. Don't let its diminutive size fool you: the uDAC family packs a proverbial punch when it comes to improving the sound you get from your computer, meeting or exceeding the performance of audiophile-grade CD players. uDAC is also flexible: its outputs include analog Rca, digital coaxial, and high-performance headphone outputs to accommodate most computers and self-powering headphones. Why the little uDAC can make such a big difference. The DAC (Digital Audio Converter) in most laptops are typically not designed to deliver best-quality sound. This can result in subtle errors in the rebuilding process, diminishing audio quality. Advanced NuForce DACs create a warmer, more detailed approximation of the source file. Audio sounds richer and fuller, with more clarity on the high and and more depth and power in the mids and lows. You'll hear details in your favorite music you never heard before. Your favorite headphones and speakers reproduce sound to their full potential. About Asynchronous USB Audio Only the uDAC-2SE (Special Edition) and uDAC-2SGE (Signature Gold Edition) are designed for Asynchronous USB Audio mode. The difference between synchronous and asynchronous USB audio is detectable by most, but best left for the individual audio enthusiast and audiophile to decide. That's why if you're new to appreciating high-quality USB audio, we recommend that you start with our baseline uDAC-2 model without Asynchronous USB Audio to avoid the more involved setup required for AA. If you ever decide to upgrade to a uDAC-2SE, we provide the option to purchase a kit (Sgd $189) that includes a replacement circuit board and stainless steel front and back panels* *For more information, please refer to the Async USB Audio FAQ and Setup Guide. No matter what uDAC you choose to start with, you can expect to hear detail, warmth and clarity from your computer's digital audio files you've never heard before. On listening at low volumes: If you're using the uDAC-2 with sensitive in-ear earphones and listening at low volume, please read this article about channel imbalance issues . Notes For Recording Engineer: The uDAC-2 is designed for consumer playback of digital music and has not been calibrated for professional recording. At the 9 o'clock volume indicator, there is hardly any signal; further, analog pots do not behave reliably. At normal listening levels, the volume tracking is within 1dB. The uDAC-2 volume maxes out at around 0dB input (maximum digital input). Thd+N around 1% is intentional to target the voltage rail limit in order to achieve the loudest possible, but distortionless, music playback. Short of 1% THD at 0dB input, the Dac2 is not at its voltage limit, which results in diminished volume for music.
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Sony Pha-1A Portable Headphone Amplifier & USB DAC - Silver at 2193.00 HKD from TREOO.com
Sony Pha-1A Portable Headphone Amplifier & USB DAC - Silver
HK$ 2,193.00
Enhance Your Music Breathe more life into everything you hear with the sleek, pocket-sized Pha-1A Portable Headphone Amplifier. Engineered to deliver superior sound performance, the Pha-1A enhances the quality of everything you listen to, and brings out the potential of headphones to its full extent. Especially when paired with Hi-Res Audio devices like Sony’s Mdr-1A Headphones plugged into the Walkman ® Nwz-A17, the Pha-1A makes it possible for you to enjoy powerful Hi-Res Audio sound quality wherever you go. A Purer State of Sound Made for true music lovers, the Pha-1A is designed to deliver High-Resolution Audio sound quality for the ultimate music experience. Its Pulse Code Modulation (Pcm) method captures data volume about 6.5 times that of CDs, at a higher sampling rate and bit depth of up to 192kHz/24bit. This reproduces sound characteristics closer to the original recording and picks up on subtle nuances that bring more life and evokes a greater emotional depth as you listen. With a high/normal gain control option, the Pha-1A is ready to drive a multitude of headphones with varying impedance from 8Ω - 600Ω. Surreal Sound, Sublime Music Moments No matter what your music preference is, the Pha-1A delivers studio-sound quality right to your ears. Thanks to Sony’s innovative audio technologies that bring out the best of your music from High-Resolution Audio compatible devices, now, everything you listen to produces a hyper-realistic sensation, as if you were right in the heart of a live performance. Feel Emotion in Every Note The Science Behind the Sound In the pursuit of pure sound quality, the Pha-1A is integrated with Sony’s innovative technologies: equipped with the Wolfson Wm8740 DAC chip that is utilised for high-end premium models, a low-distortion amplifier that operates at a low-noise level, a high 5V power supply offers a high S/N ratio, and an output capacitor-less (Ocl) amplifier ensures minimal sound distortion. High sound quality solder used in the Walkman ® Nwz-A17 delivers natural balances in low-mid-and high-range sound. This makes what you listen to closer to the original recording with more life in every note Engineered for Performance Thanks to the PHA-1A’s wideband performance that spans from 10Hz to 100kHz, you can enjoy a variety of music genres that contain rich, deep bass to radiant highs and listen to vocal melodies and subtle audio harmonics, clearly and naturally. Beyond hearing, the Pha-1A lets you feel every emotion of what you listen to that makes music all the more worth indulging in. Hi-Res Audio On-The-Go Go loud and powerful with the PHA-1A’s USB DAC amp that converts and enhances music data from your portable device, so you can enjoy advanced High-Resolution Audio while out and about. Simply link the USB DAC amp to your headphones and a compatible PC, Xperia™; iPhone, iPad, iPod ® or Walkman ® ; to begin magnifying your music experience on-the-go. Sophisticated in Design, Functional in Size The PHA-1A’s appeal lies in its design. Apart from its sleek aluminium casing that doubles-up as a protection cover from knocks and shocks, its small, lightweight body weighs around 5 ounces (150g), that makes it ultra-portable when you’re out and about. For enhanced convenience, a silicone band is provided for easy carrying when plugged in to other devices.
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 Headphone + Amplifier Discount Bundle at 55.00 HKD from TREOO.com
Headphone + Amplifier Discount Bundle
HK$ 55.00
Customise your own headphone and amplifier bundle with TREOO.com, because we know you are often looking out for the best audio promotions out there. We can now guarantee you the best prices with these highly customisable bundle deals! Simply select your preferred combo, add to cart then checkout, and we're off to get them delivered to you. Notice: Due to foreseen overwhelming demand of products through our combo bundles, certain products may be temporarily out of stock. But it will be always worth the wait when that happens. Just hang in there, and we'll deliver as soon as the products are restocked. Why does it start from S$10? A service charge is required for us to bring you such unbeatable bundle discounts. Can't Find Your Perfect Match?
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Shozy Px-M1 Portable Headphone Amplifier - Silver at 2193.00 HKD from TREOO.com
Shozy Px-M1 Portable Headphone Amplifier - Silver
HK$ 2,193.00
This stylish and sleek portable headphone amp will breathe new life into your audiophile setup while on the go.
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 JDS Labs C5 Portable Headphone Amplifier - Black at 1588.00 HKD from TREOO.com
JDS Labs C5 Portable Headphone Amplifier - Black
HK$ 1,588.00
Audibly Perfect Channel Balance Digital stepped attenuation with zero-crossing detection and 1dB attenuation steps provide smooth volume adjustment at all volume levels, even with sensitive IEMs. DC Coupled Signal Path C5 uses a purely resistive signal path. Thin film, 0.1% tolerance resistors ensure low noise and high channel accuracy. Dual LDO Power Regulation High performance audio starts with clean power. Supply rails are filtered by impressive Tps7A4700 and Tps7A3301 regulators to achieve ultra low supply noise at a constant output voltage of+/-7V. Smart USB Charging Powered by a large 1200mAh Li-Ion battery, C5 quickly charges from any USB port (computer, tablet charger, cell phone charger, etc.). A single LED indicates battery status: solid green while on, blinking while battery is low, or blue while charging.
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NuForce Hap-100 Desktop Headphone Amplifier - Black at 4390.00 HKD from TREOO.com
NuForce Hap-100 Desktop Headphone Amplifier - Black
HK$ 4,390.00
The Hap-100 is a preamp and headphone amplifier for the audio enthusiast for whom quality headphone listening is a priority. The HAP-100's innovative design offers features never before available at its modest price point. Most significantly, the Hap-100 shares technologies first employed in our flagship P-20 preamp, along with other audiophile-grade developments. As with the remarkable P-20, the Hap-100 exploits NuForce's most recent work in volume controls. At the unit's core is a switched-resistor ladder network of low-noise, thin-film resistors, one per volume setting, permitting discrete, high-resolution increments of 1dB for the HAP-100's one hundred volume steps.
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FiiO Q1 Portable Headphone Amplifier & USB DAC at 764.00 HKD from TREOO.com
FiiO Q1 Portable Headphone Amplifier & USB DAC
HK$ 764.00
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Alpha Design Labs X1 Portable Headphone Amplifier & USB DAC - Red at 3572.00 HKD from TREOO.com
Alpha Design Labs X1 Portable Headphone Amplifier & USB DAC - Red
HK$ 3,572.00
The ADL X1 is a small, discrete, but highly specified DAC/headphone amp with inputs supporting iOS digital at up to 16/48 via Apple MFI certified USB Cable for iPod, iPhone, iPad devices. The X1 also runs 24/192 S/pdif with high-resolution files from PC via the PC’s USB output. There’s an analog line-level 4-pin 3.5mm input and a 4-pin 3.5mm output for headphones in the 12~600 ohm range. The 4-pin input supports 3.5mm Remote and Mic Earphones. The 3.5mm Toslink optical output delivers Spdif up to 24/192. There's also a convenient GND Trrs switch making it easy to change from one 4-pin set of 'phones to another.
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 Aune X1 PRO 24Bit/192Khz Desktop Headphone Amplifier & USB DAC at 2083.00 HKD from TREOO.com
Aune X1 PRO 24Bit/192Khz Desktop Headphone Amplifier & USB DAC
HK$ 2,083.00
The Aune X1 PRO is the fourth generation of the Aune X1, with the USB section using the latest USB asynchronous chip Sa9027. The Aune X1 continues to offer Coaxial and Spdif inputs, pre-amp functionality, and a headphone amp that is powerful enough drive demanding headphones. The Aune X1 PRO may be used as: High quality USB Soundcard High quality DAC High quality headphone amp High quality pre-amp
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Icon NuForce DAC Desktop Headphone Amplifier & USB DAC - Silver at 2193.00 HKD from TREOO.com
Icon NuForce DAC Desktop Headphone Amplifier & USB DAC - Silver
HK$ 2,193.00
Icon DAC is a newly designed DAC with very high power headphone amp and supports Android*, PC and Mac. Its performance is as good as the award winning Icon Hdp. Note that DSD playback support is limited to using foobar200 player on the Windows 7 and 8 OS. The innovative NuForce Icon DAC delivers the latest mobile device connectivity by supporting USB Audio for Android (4.1 and beyond with Otg), Mac and PC (with advanced PCM and Dsd), a high-power headphone amplifier, a linear volume control and genuine audiophile construction throughout. With the advent of Smartphones and their enormous storage capabilities, a great many audio enthusiasts have been longing for a quality DAC/headphone amp they can simply plug into in order to experience their favorite music delivered with vivid clarity. The Icon DAC stands as the ideal solution for mobile music listeners seeking audiophile-grade performance. This versatile device features a USB input compatible with typical Windows or Mac computer-based setups, as well as Android 4.1.1* (with optional OTG cable). In addition, employed simply as a headphone amp or preamp the Icon DAC provides a secondary analog input for stereo signals from most home-audio and mobile sources.
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 Shonyun Sh-306A Portable Headphone Amplifier at 1478.00 HKD from TREOO.com
Shonyun Sh-306A Portable Headphone Amplifier
HK$ 1,478.00
The new and upgraded version Shonyun-306A up from the older Sh-306. The Sh-306A is a portable mini stereo headphone amplifier. Compared with the older version, the new 306A circuit architecture is similar but with numerous upgrades. The customised, high-quality and high-capacity lithium battery pack is not only high in capacity and discharge current, it is also able to provide plenty of power amplifier supply. The new model also sports a patch to the capacitor polarity line, greatly reducing the internal resistance to make the sound more clear, bright and powerful. The new 306A portable amplifier output has been increased by optimizing the power design. You can now better drive your big full-size headphones. In addition to better drivers, this portable amp also has a smart charge and discharge lithium battery monitoring circuit. Once the battery discharge goes below the preset voltage, the protection circuit will cut off power to ensure the safety of the device and headphones. And once it is charged full, the protection circuit will cut off the charging power supply immediataly for the same safety reasons. The Shonyun 306A uses the original imported Japanese Alps potentiometer push-pull feature, not only does it click with a beautiful sound, it is reliable and easy to use. Simply press the potentiometer knob to pop it out, then adjust the volume accordingly. Once the volume is set, you may press the knob again to retract it into the device for protection of the knob as well as a better appearance. An innovative design is such that the when a headphones is connected to the 3.5mm port, the circuit is closed and turns on the 306A; unplug the headphones and this switches off the 306A. The 306A is rated to driver 16 ohms to 300 ohms headphones and earphones. Some known models that work best when tested were the AKG K701, K601, Technica Ad900, Etymotic Er4S and Yuin Pk1. Headphones with higher impedance are perfect for the 306A, a good choice to make this amplifier perform to its best.
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Sony Pha-3 Portable Headphone Amplifier & USB DAC at 6588.00 HKD from TREOO.com
Sony Pha-3 Portable Headphone Amplifier & USB DAC
HK$ 6,588.00
The Sony Pha-3 High Resolution USB DAC and Headphone Amplifier can help reveal details and layers in the high resolution audio files stored on your PC, smartphone, tablet or music player. The unit converts Hi-Res signals (Pcm up to 384 kHz/32 bit and Dsd) from your device's digital output for you to enjoy through headphones. The D/A conversion technology provides a spacious, three-dimensional soundstage with clear channel separation over the amplifier's balanced output. The device supports PCM files up to 384 kHz/32-bit resolution on a computer, up to 48 kHz/24-bit resolution on an iPhone/iPad/iPod, up to 192 kHz/24-bit through an optical link, as well as 2.8 MHz and 5.6 MHz DSD files. It can deliver a frequency response of 10 to 100,000 Hz with 0.01% distortion into an impedance between 8Ω and 600Ω. When using the balanced output, the amplifier can supply a maximum of 320 mW (at 32 Ω at 1% distortion) to each channel of the stereo pair. The combination DAC and headphone amplifier is compatible with both Windows and Mac OS X computers and comes with: one digital cable for Walkman devices, one digital cable for Xperia mobile devices, two micro-USB cables, one stereo mini audio cable, two USB AC adaptors and four silicone belts.
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Creative SoundBlaster E3 Portable Headphone Amplifier & USB DAC at 929.00 HKD from TREOO.com
Creative SoundBlaster E3 Portable Headphone Amplifier & USB DAC
HK$ 929.00
HD Headphone Amplifier with Enhanced Audio Quality via Bluetooth! The Sound Blaster E3 is a headphone amplifier that gives you high audio quality performance with music streaming wirelessly to your smart mobile devices. It supports USB audio streaming from the smart mobile devices as well, providing a higher grade of quality than Bluetooth. Enjoy Wireless Freedom via Bluetooth Free up your phone. Music is streamed via Bluetooth (without wires) to the Sound Blaster E3. So even if you chuck your phone into your bag, you can control the music playback, as well as the volume, remotely via the Sound Blaster E3. When a phone call comes in, a simple press of a button on the Sound Blaster E3 allows you to answer the call. Studio Quality Audio - with 600ohm Headphone Support The built-in headphone amplifier supports up to 600ohm, so there are no limits to the type of headphones you can pair with the Sound Blaster E3. For Quality Digital Audio On-the-Go! Sound Blaster E3 functions as a portable USB Dac, which means you can connect it to selected smartphones or tablets via USB cable (Otg cable required) for uncompressed digital audio streaming.
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OPPO Ha-2Se Portable Headphone Amplifier and USB DAC at 2632.00 HKD from TREOO.com
OPPO Ha-2Se Portable Headphone Amplifier and USB DAC
HK$ 2,632.00
High-Resolution Audio Meets Style and Design Ha-2Se is an elegant yet sophisticated portable headphone amplifier with a built-in rechargeable battery. It is engineered to enhance music playback from mobile phones and portable music players. Its genuine leather casing with contrast stitching and beveled aluminium edges are eye-catching. It can be used to charge mobile devices conveniently on-the-go, and itself can be efficiently topped-up in 30 minutes. High Performance Audio Hybrid Class AB Amplifier The HA-2SE's power amplification circuit for the headphones is Class AB built with integrated circuits (ICs) and discrete transistors. The discrete transistor output stage uses hand-picked and matched parts. The output transistors are biased to operate in their most linear range for the critical small signal, and deliver their full potential when power is required. Clean Signal Path There is no DSP (Digital Signal Processor) in the Ha-2Se. Volume control is operated by a combination of the DAC chip's internal digital volume control and an analog potentiometer (the familiar volume knob). Bass boost is performed by pure analog audio circuits. By avoiding re-digitizing the audio signal for volume adjustment or bass boost, the Ha-2Se provides a clean signal path for the audio. Audio-In and Line-Out The Ha-2Se has a 3.5 mm Audio-In port to support portable music players that do not have a USB-compatible digital output. While the Ha-2Se is used with one of its USB digital input ports, the 3.5 mm jack acts as Line-Out for the USB Dac. ESS Sabre32 Reference DAC The DAC is one of the most important components for digital audio playback. The Es9028-Q2M DAC chip used in the Ha-2Se is the latest flagship mobile DAC developed by ESS Technology. With the ESS patented 32-bit Hyperstream™ DAC architecture and Time Domain Jitter Eliminator, the Sabre32 Reference DAC delivers an unprecedented performance for mobile applications. Asynchronous USB DAC By bypassing the smartphone's built-in DAC and headphone amplification circuit that are often cost-constrained, the Ha-2Se turns a smartphone into a high performance digital audio player. The asynchronous USB DAC input of the Ha-2Se also works with PC and Mac computers to replace the built-in sound card and support high-resolution audio playback with PCM up to 384 kHz 32-bit and DSD up to 12 MHz (Dsd256). Bass Boost For those who like a bit more punch and impact with their music, the Ha-2Se offers a Bass Boost function. With Bass Boost off, the Ha-2Se delivers a ruler-flat frequency response; with Bass Boost on, the Ha-2Se adds force and impact to the sub-bass region without muddling the important mid- to high-frequency bands. Two Gain Settings The Ha-2Se offers two gain level settings for optimal headphone matching. The High Gain mode is capable of driving large power-hungry headphones, delivering up to 300 mW into 16-Ohm headphones. The Low Gain mode is intended for sensitive In-Ear Monitor type earphones. Premium Mobility Made for iPod®; iPhone® and iPad® The Ha-2Se passes Apple's "MFi" certification and is compatible with the latest iPod, iPhone and iPad to be used as the digital audio output accessory of these devices. By tapping directly into the digital audio signal of these devices and converting the audio to analog using the high performance Sabre32 Reference Dac, music from your favorite portable device will sound its best. Furthermore, for users with high-resolution music playback apps, the Ha-2Se does not require the use of a Camera Connection Kit (Cck). The data cables that come with your Apple device or the supplied Lightning cable is sufficient. Compatible with Android The HA-2SE’s micro-USB input port works with Android devices that support USB OTG (Usb On-The-Go) and USB Audio Class. A special USB OTG cable is supplied with the Ha-2Se to facilitate the connection. When used with a compatible Android device, the Ha-2Se can support the device's built-in music app, tones and notifications. Additionally, a high-resolution music playback app can use the Ha-2Se as its external DAC to play lossless PCM and DSD audio files. Mobile Power Bank The Ha-2Se functions as an external battery pack to charge your mobile device. Utility and convenience are factors we wanted to address with the Ha-2Se, so you can ditch the bulky spare battery pack and carry just the Ha-2Se with you mobile phone. Rapid Charging The Ha-2Se features patented Vooc rapid charging technology from Oppo. Using the supplied rapid charger, the internal battery can be quickly and safely charged to 70% capacity in about 30 minutes. It only takes approximately 90 minutes to fully charge the battery. A quick charge gives the Ha-2Se hours of operation time. Build Quality The Ha-2Se is housed in an aluminum chassis wrapped in genuine leather. The beveled metal edges and contrast stitching on the leather are eye-catching. Its fit and finish will instill a sense of pride when using the product. The Ha-2Se meshes equally well in the pocket of an urban Millennial or on the desk of a business executive.
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iBasso D14 Bushmaster Portable Headphone Amplifier & USB DAC at 2028.00 HKD from TREOO.com
iBasso D14 Bushmaster Portable Headphone Amplifier & USB DAC
HK$ 2,028.00
The D14 packs a Sabre32 Es9018K2M DAC chip and a Xmos USB audio controller which takes up to 32bit/384kHz PCM signal, and up to 256x native DSD signal from Windows PC and Mac computers. The bushmaster is capable of asynchronous USB transfer. With an Opamp+Buf design, the D14 Bushmaster ensures high current and high power output. It is flexible with its inputs, such as Windows PC and MAC computers USB digital signal (Usb Soundcard), OTG audio signal from Android 4.1 or above device, digital signal from iPhone/iPad with camera kit cable, and even accepts coaxial input and optical input. The D14 can function as a Dac+Amp Combo, a standalone Amp, or a standalone DAC (Line out function) with a 2-Setting Gain Switch for impedance matching. Don't be afraid of it running low on battery too fast with its rechargeable Li-polymer battery and smart integrated charging system that churns out 13 hours when used as an Amp+Dac only, or a whopping 25 hours when used as an Amplifier only device. Input Connectivity There is an input switch on the rear panel as shown on the above picture. When the switch is on the AUX position, the D14 works as an AMP only, which means it takes analog input from AUX In/out port. When the switch is on the USB position, the D14 takes digital input from the USB port. When changed to the Spdif position, the D14 takes coaxial or optical digital input from the Spdif port, provides line out on AUX In/out port and amplified output on the Phone port. The D14 takes various USB digital inputs. First, it takes USB signal from PC and MAC to work as a Weight: 149g or 5.26oz USB soundcard. Second, it takes an OTG audio signal from an Android device with Android 4.1 or above. Third, it takes iPhone and iPad’s digital output via Camera kit cable.
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Audio-Technica At-Ha22Tube Headphone Amplifier at 2572.00 HKD from TREOO.com
Audio-Technica At-Ha22Tube Headphone Amplifier
HK$ 2,572.00
The audio-technica At-Ha22Tube Headphone Tube Amplifier employs a vacum tube preamplifier resulting in a thick rich sound that only tube aplifiers can attain. Independent Left and Right vacuum tube circuit faithfully reproduces hi-resolution sound. Design employs a hybrid system using both the vacum tubes and semiconductor technology. Die-cast aluminum case suppresses unnecessary vibration and distortion. A convenient line-through output function allows the use of an AV system or other AV devices. Two headphones can be used at the same time using the front panels dual outputs.
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 Heir Audio Rendition 1 Portable Headphone Amplifier - Silver at 2742.00 HKD from TREOO.com
Heir Audio Rendition 1 Portable Headphone Amplifier - Silver
HK$ 2,742.00
Heir Audio is very pleased to launch our first portable amplifier, Rendition 1, worldwide. After a full year research and development, our engineers have designed a unique personal amplifier with excellent sound quality supported by a long lasting battery. Just like our any other products, Rendition 1 carries the Heir Audio signature of exquisite design concept with the delicate black carbon fiber on the both sides. Rendition 1 has further expanded our product line and once again reinforced our belief that each one of our products is a unique acoustical and artistic expression of the beauty of music! The successful preorders have approved the acceptance of this wonderful amplifier! The Rendition 1 is an exciting portable amp, that in keeping with Heir Audio tradition, sounds as good as it looks, and looks as good as it sounds. The sound quality can be described as “black” (quite) or without back ground hiss. The concept behind the amp was to add more “depth” and “control” to the music, rather than adding colouration. If bass is present in the music, the amp is there, waiting to add more depth; if there are highs in the music, the amp delivers those as well cleanly and clearly. The Rendition 1 is available in two case colours, black or silver, accented with black carbon fiber, rendering a look of unsurpassed class.
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Audio-Technica AT-PHA50BT Bluetooth Wireless Headphone Amplifier (Black) at 893.00 HKD from YesAsia
Audio-Technica AT-PHA50BT Bluetooth Wireless Headphone Amplifier (Black)
HK$ 893.00
Audio-Technica AT-PHA50BT Bluetooth Wireless Headphone Amplifier (Black)
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FiiO A5 Portable Headphone Amplifier - Black at 1094.00 HKD from TREOO.com
FiiO A5 Portable Headphone Amplifier - Black
HK$ 1,094.00
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Teac Ud-501 Desktop Headphone Amplifier & USB Pcm/dsd DAC - Black at 5489.00 HKD from TREOO.com
Teac Ud-501 Desktop Headphone Amplifier & USB Pcm/dsd DAC - Black
HK$ 5,489.00
TEAC's new Ud-501 is the star of the 501 series. The Ud-501 supports Direct Stream Digital (Dsd) playback at either 2.8 MHz or 5.6MHz (Dxd) rates. PCM audio is supported up to 384kHz/32-bit resolution. It connects to your computer over USB using Asio 2.1 or DoP. The output section of the Ud-501 features two BurrBrown 32-bit DACs per channel and JRC Muses op amps, also with a dual monaural design. Both balanced XLR and unbalanced RCA outputs are available to connect to your power amplifier. A toroidal-core power supply ensures top performance and clean transient playback, for quality that outperforms components five times its price. Advanced Digital Circuits for Hi-resolution Audio Formats DSD 2.8/5.6MHz Native File Playback by Asio 2.1 or DoP Both 2.8MHz and 5.6MHz DSD files are processed in native mode to properly convert DSD into an analog signal, and skipping PCM conversion in between. Asio2.1 and DoP (Dsd over Pcm) playback are also supported. (Mac supports DoP only, with standard driver) Up to 32bit/384kHz PCM File Playback With PCM file format, files from 44.1kHz/16-bit to 384kHz/32bit resolution are supported. Asynchronous Transfer Mode Transfer timing is controlled by more accurately by ignoring the clock signal from a PC, nearly eliminating clock-noise and allowing digital data to travel un-affected. Variety of Digital Filter Settings and Preferences Three types of digital filters are provided for PCM playback, while 4 types of cut-off filters are provided for DSD playback. Also, shutting down unnecessary circuits – USB circuit when S/pdif inout is selected, or Line Out circuit when Headphones are connected – for purer audio processing. Reducing Jitter Noise by 192kHz Up-Converting With a PCM file sampling at a frequency less than 192kHz, users are able to convert up to 192kHz in order to reduce jitter noise, or keep the original sampling rate to enjoy the original sound. Pure Audio Circuits With Classic Audio Pedigree Dual Monaural Circuits to Eliminate Signal Interference and Maximize Performance. Every single part of the digital and analog sections are designed in dual monaural design to eliminate interfering noise to other channels. This maximizes the potential of the the DAC and the operational amplifiers, and achieves a purer audio processing signal. 32bit-compatible BurrBrown Pcm1795 on Each Channel The celebrated BurrBrown Pcm1795 D/A converter is used on each channel, which supports 32bit audio with a 123dB S/N Ratio. D ual Muses8920 Operational Amplifier on Each Channel Two Muses8920 operational amplifiers are used on each channel. The Muses8920 was developed for hi-fi components to deliver clear, 3-dimensional sound. Individual Toroidal-core Power Transformer on Each Channel – Maintaining Total Dual Monaural Design The two toroidal-core power transformers offer a stable current supply with energy-effcient operation. Using a pair of power transformers, one each for the left and right channel, ensures that current is delivered exclusively to each channel. RCA Output with Parallel Buffer for Better Drivability Two operational amplifiers are connected in parallel with the line out circuit section to improve of line-out signal drive. This helps achieve a more linear analog output signal than any other known method. Large Number of Inputs & Outputs for Full-Scale Hi-Fi System Integration The Ud-501 provides two optical and coaxial digital inputs, one pair of XLR and one pair of RCA analog audio outputs. The RCA lineout jacks have an exclusive clearance zone, so a high grade pin cable with a large shell is able to be connected. The output terminal is selectable to either RCA or Xlr. The XLR output connectors have switchable polarity, either pin 2 HOT or pin 3 Hot, to accomodate vintage amplifiers. A standard detachable IEC cable with 3-polar socket allows user to upgrade to high-grade AC cables.
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Icon NuForce iDo Portable Headphone Amplifier & USB DAC - Red at 2116.00 HKD from TREOO.com
Icon NuForce iDo Portable Headphone Amplifier & USB DAC - Red
HK$ 2,116.00
NuForce Icon iDo is an Audiophile-Grade DAC and Headphone Amp for iPad®; iPhone® and iPod Touch®. iDo extracts audio data in its original digital form (in USB Host mode) from Apple mobile digital devices, delivering bit-perfect, low-jitter, audiophile-quality music file playback. The Icon iDo delivers audiophile-grade CD quality sound to digital music files stored on Apple® mobile digital devices. iDo is ideal for music enthusiasts and musicians alike who primarily listen to—and have their digital music libraries stored on—these devices. Apple products are becoming the hub of a person’s entire music and audio collection, so improving the audio quality produced by these devices is key. The Icon iDo delivers on that at very affordable price point. A fast and easy connection. Using the Icon iDo is simple. Users can connect any Apple mobile device to the Icon iDo with the Apple® approved and included 30-pin sync/charging cable, attach the power supply, and then plug the Icon iDo into a home stereo system using RCA cables or a single coaxial. Users can also plug in headphones directly into the Icon iDo for personal high quality sound playback in a manner the artist intended it to be heard. How iDo makes music stored on Apple devices sound even better? Apple uses its own audio codec, Apple Lossless Encoder (Ale), to compress and store music files on its devices in original CD quality without loss. However, even ALE files only sound as good as the default DAC (digital-to-analog converter) found within the mobile digital device. Icon iDo bypasses the built-in DAC and extracts the audio data stored on the device in its original digital form in USB Host Mode. It then converts the high-quality files for bit-perfect and low-jitter music playback. A portable power station for the ultimate headphone listening experience. Icon iDo also offers a built-in headphone amplifier capable of powering power-hungry headsets, giving users a total audio experience. By properly powering headphones, Icon iDo enhances the auditory performance of the headphones because optimal amperage is being delivered to them, allowing for greater audio clarity. *The maximum sample rate currently supported by Apple is 16-bit/44.1kHz or 24-bit/48kHz. **Icon iDo is designed to work with Apple iTune and iPod software. Other applications may not work (but we have not found any application that is incompatible with iDo).
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 Lehmann Audio Linear Desktop Headphone Amplifier - Silver at 7143.00 HKD from TREOO.com
Lehmann Audio Linear Desktop Headphone Amplifier - Silver
HK$ 7,143.00
Already since 2004 the Linear has made all common headphones to shine at their very best. Extremely demanding users rely on our top model, from the West German Broadcasting Corporation to the audiophile Tacet label to Sennheiser's and AKG's headphone experts. It’s not without reason that the Linear belongs to the reference class in its genre. When you put on your headphones and load your favourite CD, the Linear will give rise to wonderful worlds before your mind’s eye. Physical, punchy lows and a delicate resolution reveal your favourite tracks in all their glory over the entire frequency bandwidth. Carefully selected components and an extremely sophisticated circuit design establish the foundation of our number on. "The best we've come across." — What Hi-Fi A universal champion With three gain settings it gives you an impressive listening pleasure, keeping an eye on your needs anytime – and this using a vast array of headphones on the most diverse sound sources. In this context we have, of course, taken into account the varying performance requirements and sensitivity levels of the headphone types currently available on the market. If you would like to share your joy at this quality of music reproduction with family and friends, our multiple test winner will be happy to feed two headphones at the same time. Of course, the listening enjoyment will remain equally fabulous then. The two parallel outputs of the discrete class A solid-state output stage.provide the basis of this double musical enjoyment. A propos: if you wish so, the Linear will also stimulate your active speakers to a stunning vitality. In every situation a magnificent sound, always striving for perfection – such is our Linear.
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Icon Nuforce -2 Desktop Headphone Amplifier & USB DAC - Silver at 3011.00 HKD from TREOO.com
Icon Nuforce -2 Desktop Headphone Amplifier & USB DAC - Silver
HK$ 3,011.00
"The heart of your digital life" Operating from a technology platform that has won Nuforce numerous awards and rave reviews, Nuforce’s Second-Generation Icon is an audiophile-grade Integrated Desktop Amplifier featuring two 24-watt outputs for speakers, a 3.5-mm stereo input for connection to an iPod or other portable device, a USB DAC (24bit/96KHz high resolution) for converting digital music from the computer, and standard RCA inputs for employing the Icon as the heart of a conventional audio system. For the headphone enthusiast, the Icon also offers a high-performance headphone output. Of particular interest to the computer user, the Icon’s line-out functions as a PC or Mac USB-to-analog audio converter or can also be used as a connection to a subwoofer. Rj45 Pin Specifications Note: The Rj45 pin specification is provided for users who need to create a long speaker wire using standard ethernet cable. Users can also extend the length of the standard Icon-2 speaker cable using a Rj45 Coupler. Note: Icon-2 is not compatible with S-1 speakers.
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Cayin C6 Portable Headphone Amplifier & USB DAC for Smartphone (EX Demo) at 1588.00 HKD from TREOO.com
Cayin C6 Portable Headphone Amplifier & USB DAC for Smartphone (EX Demo)
HK$ 1,588.00
C6 is a portable High-Fidelity DAC + Headphone amplifier unit. Utilizing digital connection enables audio decoding to be carried out by the C6's Wolfson Flagship Wm8741 DAC chip. Enabling high fidelity audio for your portable needs.
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Icon NuForce uDAC-2SE Portable Headphone Amplifier & USB DAC - Special Edition Black at 1978.00 HKD from TREOO.com
Icon NuForce uDAC-2SE Portable Headphone Amplifier & USB DAC - Special Edition Black
HK$ 1,978.00
Advanced NuForce technology delivers highest-resolution audio for superior sound. If you own a laptop and love music, you need a NuForce uDAC-2SE. If you're a gamer, uDAC-2SE brings realistic sound effects that put you in the game. The NuForce uDAC-2SE is a high-performance, 24bit/96kHz USB Digital Audio Converter (Dac) that connects your personal computer's audio to your home stereo, desktop sound system, or headphones to deliver superior sound. It improves upon our original uDAC model by providing a highly linear Tocos volume control for improved channel tracking at low listening levels, a 24bit/96kHz USB Dac, and an improved headphone amp. Powerful sound in a small, affordable package. Don't let its diminutive size fool you: the uDAC family packs a proverbial punch when it comes to improving the sound you get from your computer, meeting or exceeding the performance of audiophile-grade CD players. uDAC is also flexible: its outputs include analog Rca, digital coaxial, and high-performance headphone outputs to accommodate most computers and self-powering headphones. Why the little uDAC can make such a big difference. The DAC (Digital Audio Converter) in most laptops are typically not designed to deliver best-quality sound. This can result in subtle errors in the rebuilding process, diminishing audio quality. Advanced NuForce DACs create a warmer, more detailed approximation of the source file. Audio sounds richer and fuller, with more clarity on the high and and more depth and power in the mids and lows. You'll hear details in your favorite music you never heard before. Your favorite headphones and speakers reproduce sound to their full potential. About Asynchronous USB Audio The uDAC-2SE (Special Edition) and uDAC-2SGE (Signature Gold Edition) are designed for Asynchronous USB Audio mode. The difference between synchronous and asynchronous USB audio is detectable by most, but best left for the individual audio enthusiast and audiophile to decide. That's why if you're new to appreciating high-quality USB audio, we recommend that you start with our baseline uDAC-2 model without Asynchronous USB Audio to avoid the more involved setup required for AA. If you ever decide to upgrade to a uDAC-2SE, we provide the option to purchase a kit (Sgd $189) that includes a replacement circuit board and stainless steel front and back panels* *For more information, please refer to the Async USB Audio FAQ and Setup Guide. No matter what uDAC you choose to start with, you can expect to hear detail, warmth and clarity from your computer's digital audio files you've never heard before. On listening at low volumes: If you're using the uDAC-2 with sensitive in-ear earphones and listening at low volume, please read this article about channel imbalance issues . Notes For Recording Engineer: The uDAC-2 is designed for consumer playback of digital music and has not been calibrated for professional recording. At the 9 o'clock volume indicator, there is hardly any signal; further, analog pots do not behave reliably. At normal listening levels, the volume tracking is within 1dB. The uDAC-2 volume maxes out at around 0dB input (maximum digital input). Thd+N around 1% is intentional to target the voltage rail limit in order to achieve the loudest possible, but distortionless, music playback. Short of 1% THD at 0dB input, the Dac2 is not at its voltage limit, which results in diminished volume for music.
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 JDS Labs Objective2 + Odac Combo Desktop Headphone Amplifier & USB DAC - Black at 2412.00 HKD from TREOO.com
JDS Labs Objective2 + Odac Combo Desktop Headphone Amplifier & USB DAC - Black
HK$ 2,412.00
The O2+Odac combo is an Objective2 headphone amplifier with an Odac installed in the same enclosure. O2 is an open source amplifier designed by NwAvGuy, with emphasis on benchmark performance and low cost. Odac is a digital-to-analog convertor designed along the same principles of maximum performance and value. Together, O2+Odac deliver reference grade audio performance at a fraction of the price of comparable equipment. The O2+Odac requires a mini-USB cable (included) and AC power adapter suitable for your region. Please note that the O2+Odac does not contain batteries. Choose the separate Objective2 and Standalone Odac if you require a rechargeable configuration. Note: You need a separate power adapter with this device. If you do not have one, please add the G.e.z. 15Vac Power Adapter to cart.
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Titan iRiver Astell&Kern Ak380 Amp Docking Portable Headphone Amplifier - Meteoric at 6038.00 HKD from TREOO.com
Titan iRiver Astell&Kern Ak380 Amp Docking Portable Headphone Amplifier - Meteoric
HK$ 6,038.00
The AK380's First Accessory, AMP The primary goal of Astell&Kern has always been to deliver the original sound. We're proud to introduce the Ak380 Amp, an amplifier that supports high-impedance headphones and high-gain output while remaining faithful to the original sound. Expansion-type amplifier with design unity. 3,400 mAh large-capacity battery. 8.1 Vrms high-gain balanced output. 4.1 Vrms unbalanced output. Introducing Ak380 Amp, the first accessory to complement the Ak380. High Gain The Ak380 AMP supports 8.1 Vrms output when connected via high-gain balanced output. High-gain output is four times greater than low-gain output and supports high-impedance headphones. To protect earphones/headphones during high output, the volume is automatically adjusted when the amp is powered on or the earphones/headphones are disconnected. Furthermore, the gain can be easily adjusted via the AK380's settings. 3,400 mAh Large-capacity Battery An amplifier, which increases audio output, consumes a great amount of energy. Thus, the Ak380 AMP features a 3,400 mAh large-capacity battery – identical to the one in the Ak380 itself - to support up to nine hours of continuous unbalanced-output playback.
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Icon NuForce iDo Portable Headphone Amplifier & USB DAC - Black at 2116.00 HKD from TREOO.com
Icon NuForce iDo Portable Headphone Amplifier & USB DAC - Black
HK$ 2,116.00
NuForce Icon iDo is an Audiophile-Grade DAC and Headphone Amp for iPad®; iPhone® and iPod Touch®. iDo extracts audio data in its original digital form (in USB Host mode) from Apple mobile digital devices, delivering bit-perfect, low-jitter, audiophile-quality music file playback. The Icon iDo delivers audiophile-grade CD quality sound to digital music files stored on Apple® mobile digital devices. iDo is ideal for music enthusiasts and musicians alike who primarily listen to—and have their digital music libraries stored on—these devices. Apple products are becoming the hub of a person’s entire music and audio collection, so improving the audio quality produced by these devices is key. The Icon iDo delivers on that at very affordable price point. A fast and easy connection. Using the Icon iDo is simple. Users can connect any Apple mobile device to the Icon iDo with the Apple® approved and included 30-pin sync/charging cable, attach the power supply, and then plug the Icon iDo into a home stereo system using RCA cables or a single coaxial. Users can also plug in headphones directly into the Icon iDo for personal high quality sound playback in a manner the artist intended it to be heard. How iDo makes music stored on Apple devices sound even better? Apple uses its own audio codec, Apple Lossless Encoder (Ale), to compress and store music files on its devices in original CD quality without loss. However, even ALE files only sound as good as the default DAC (digital-to-analog converter) found within the mobile digital device. Icon iDo bypasses the built-in DAC and extracts the audio data stored on the device in its original digital form in USB Host Mode. It then converts the high-quality files for bit-perfect and low-jitter music playback. A portable power station for the ultimate headphone listening experience. Icon iDo also offers a built-in headphone amplifier capable of powering power-hungry headsets, giving users a total audio experience. By properly powering headphones, Icon iDo enhances the auditory performance of the headphones because optimal amperage is being delivered to them, allowing for greater audio clarity. *The maximum sample rate currently supported by Apple is 16-bit/44.1kHz or 24-bit/48kHz. **Icon iDo is designed to work with Apple iTune and iPod software. Other applications may not work (but we have not found any application that is incompatible with iDo).
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 JDS Labs C5 Portable Headphone Amplifier - Slate at 1588.00 HKD from TREOO.com
JDS Labs C5 Portable Headphone Amplifier - Slate
HK$ 1,588.00
Audibly Perfect Channel Balance Digital stepped attenuation with zero-crossing detection and 1dB attenuation steps provide smooth volume adjustment at all volume levels, even with sensitive IEMs. DC Coupled Signal Path C5 uses a purely resistive signal path. Thin film, 0.1% tolerance resistors ensure low noise and high channel accuracy. Dual LDO Power Regulation High performance audio starts with clean power. Supply rails are filtered by impressive Tps7A4700 and Tps7A3301 regulators to achieve ultra low supply noise at a constant output voltage of+/-7V. Smart USB Charging Powered by a large 1200mAh Li-Ion battery, C5 quickly charges from any USB port (computer, tablet charger, cell phone charger, etc.). A single LED indicates battery status: solid green while on, blinking while battery is low, or blue while charging.
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Shozy Px-M1 Portable Headphone Amplifier - Grey at 2193.00 HKD from TREOO.com
Shozy Px-M1 Portable Headphone Amplifier - Grey
HK$ 2,193.00
This stylish and sleek portable headphone amp will breathe new life into your audiophile setup while on the go.
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FiiO E12A Mont Blanc IEM Special Edition Portable Headphone Amplifier at 1369.00 HKD from TREOO.com
FiiO E12A Mont Blanc IEM Special Edition Portable Headphone Amplifier
HK$ 1,369.00
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Denon Da-300Usb Desktop Headphone Amplifier & USB DAC at 3841.00 HKD from TREOO.com
Denon Da-300Usb Desktop Headphone Amplifier & USB DAC
HK$ 3,841.00
The new Da-300Usb DAC boasts the same high definition Advanced Al32 signal processing and ultra-high precision 32 bit, 192 kHz digital to analogue conversion technologies that delivers the astounding sound quality of Denon’s top of the range CD / Sacd players. Simply connecting the minimalist styled DAC via Usb-B provides incredible quality computer-audio – with headphones or powered speakers – for computer stored music files or streaming audio over the internet. Alternatively, the Da-300Usb is a major hi-fi upgrade; enabling audiophile playback of computer music libraries and streaming audio (from any PC or Mac) via your hi-fi, at the same time dramatically improving the sound quality of other digital audio devices, like media players, CD and DVD players, TV’s and set top boxes, Apple TV, and games consoles, by connecting them to the additional coaxial and optical digital inputs. The Da-300Usb features universal digital file format support for PCM and DSD (the native file format for Sacd) digital audio signals on the Usb-B input, for bit-transparent, asynchronous playback of digital music files and streaming audio from connected PCs, and PCM signals, up to 24 bit, 192 kHz, via the Spdif and optical digital inputs. Denon Advanced Al32 Processing and High-Precision 32 bit, 192 kHz digital to analogue conversion feeds the line level outputs for connection to a hi-fi amplifier or desktop speaker system and an integrated headphone amplifier that drives all types of headphones and in-ears, for exceptional listening quality.
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FiiO K1 Portable Headphone Amplifier & USB DAC at 380.00 HKD from TREOO.com
FiiO K1 Portable Headphone Amplifier & USB DAC
HK$ 380.00
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Icon NuForce uDAC-2 Portable Headphone Amplifier & USB DAC - Violet Edition at 874.00 HKD from TREOO.com
Icon NuForce uDAC-2 Portable Headphone Amplifier & USB DAC - Violet Edition
HK$ 874.00
Advanced NuForce technology delivers highest-resolution audio for superior sound. If you own a laptop and love music, you need a NuForce uDAC-2. If you're a gamer, uDAC-2 brings realistic sound effects that put you in the game. The NuForce uDAC-2 is a high-performance, 24bit/96kHz USB Digital Audio Converter (Dac) that connects your personal computer's audio to your home stereo, desktop sound system, or headphones to deliver superior sound. It improves upon our original uDAC model by providing a highly linear Tocos volume control for improved channel tracking at low listening levels, a 24bit/96kHz USB Dac, and an improved headphone amp. With its brilliant violet case studded with 24-karat gold plated screws , and its stainless steel volume control inset with a genuine Swarovski crystal , we're sure the uDac-2 Violet Edition will find admirers everywhere. The ladies of elegance will finally feel as though an audio company has actually remembered them for a change, while guys on the upward track will just have to have its "bling" to dazzle and frustrate their friends. Powerful sound in a small, affordable package. Don't let its diminutive size fool you: the uDAC family packs a proverbial punch when it comes to improving the sound you get from your computer, meeting or exceeding the performance of audiophile-grade CD players. uDAC is also flexible: its outputs include analog Rca, digital coaxial, and high-performance headphone outputs to accommodate most computers and self-powering headphones. Why the little uDAC can make such a big difference. The DAC (Digital Audio Converter) in most laptops are typically not designed to deliver best-quality sound. This can result in subtle errors in the rebuilding process, diminishing audio quality. Advanced NuForce DACs create a warmer, more detailed approximation of the source file. Audio sounds richer and fuller, with more clarity on the high and and more depth and power in the mids and lows. You'll hear details in your favorite music you never heard before. Your favorite headphones and speakers reproduce sound to their full potential. About Asynchronous USB Audio Only the uDAC-2SE (Special Edition) and uDAC-2SGE (Signature Gold Edition) are designed for Asynchronous USB Audio mode. The difference between synchronous and asynchronous USB audio is detectable by most, but best left for the individual audio enthusiast and audiophile to decide. That's why if you're new to appreciating high-quality USB audio, we recommend that you start with our baseline uDAC-2 model without Asynchronous USB Audio to avoid the more involved setup required for AA. If you ever decide to upgrade to a uDAC-2SE, we provide the option to purchase a kit (Sgd $189) that includes a replacement circuit board and stainless steel front and back panels* *For more information, please refer to the Async USB Audio FAQ and Setup Guide. No matter what uDAC you choose to start with, you can expect to hear detail, warmth and clarity from your computer's digital audio files you've never heard before. On listening at low volumes: If you're using the uDAC-2 with sensitive in-ear earphones and listening at low volume, please read this article about channel imbalance issues . Notes For Recording Engineer: The uDAC-2 is designed for consumer playback of digital music and has not been calibrated for professional recording. At the 9 o'clock volume indicator, there is hardly any signal; further, analog pots do not behave reliably. At normal listening levels, the volume tracking is within 1dB. The uDAC-2 volume maxes out at around 0dB input (maximum digital input). Thd+N around 1% is intentional to target the voltage rail limit in order to achieve the loudest possible, but distortionless, music playback. Short of 1% THD at 0dB input, the Dac2 is not at its voltage limit, which results in diminished volume for music.
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Alpha Design Labs X1 Portable Headphone Amplifier & USB DAC - Silver at 3572.00 HKD from TREOO.com
Alpha Design Labs X1 Portable Headphone Amplifier & USB DAC - Silver
HK$ 3,572.00
The ADL X1 is a small, discrete, but highly specified DAC/headphone amp with inputs supporting iOS digital at up to 16/48 via Apple MFI certified USB Cable for iPod, iPhone, iPad devices. The X1 also runs 24/192 S/pdif with high-resolution files from PC via the PC’s USB output. There’s an analog line-level 4-pin 3.5mm input and a 4-pin 3.5mm output for headphones in the 12~600 ohm range. The 4-pin input supports 3.5mm Remote and Mic Earphones. The 3.5mm Toslink optical output delivers Spdif up to 24/192. There's also a convenient GND Trrs switch making it easy to change from one 4-pin set of 'phones to another.
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Grado RA1 Reference Desktop Headphone Amplifier (Ac) at 4006.00 HKD from TREOO.com
Grado RA1 Reference Desktop Headphone Amplifier (Ac)
HK$ 4,006.00
After years of relying on other equipment to drive Grado headphones, you can now listen and enjoy headphones through our new Grado Reference Headphone Amp, the Ra1. Designed for state-of-the-art performance and specifically to play Grados, the new RA1 will allow you to hear your headphones like never before. This new amp is machined from a solid block of mahogany and measures 5" wide, 5 1/2" deep and 1 1/2" tall and weighs in at 12 oz. The RA1 is available in an AC version or can be powered by two 9-Volt batteries that will drive the amp for 40 to 50 hours of listening pleasure. And the sound? Just like all Grados: warm, smooth, full-bodied, non-fatiguing and rich. Hook it up to any line source (portable or in-home) and drive your Grado headphones to their full potential. The Grado Labs RA1 headphone amp was designed specifically to drive Grado headphones and it does that quite decently indeed. It's recommended for use with fairly efficient (low impedance) headphones like the 32-Ohm Grado Labs headphone line. This is the 'AC-power' Grado RA1 (Ac) unit. The battery-powered amp is also available. The RA1 design is small and fairly light for portable use, although that trad Grado wood-block design makes it somewhat bulky for easy travel and mobile listening on the fly. It's a very simple yet effective & the front panel sports a volume control, an on/off LED light, and a full-size 1/4" headphone jack. The rear of the amp provides an on/off switch and one pair of left/right RCA inputs. One bummer: the battery-powered Ra-1 does not operate with a wall wart/AC adapter.
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Icon NuForce uDAC-2SE Portable Headphone Amplifier & USB DAC - Special Edition Red at 1978.00 HKD from TREOO.com
Icon NuForce uDAC-2SE Portable Headphone Amplifier & USB DAC - Special Edition Red
HK$ 1,978.00
Advanced NuForce technology delivers highest-resolution audio for superior sound. If you own a laptop and love music, you need a NuForce uDAC-2SE. If you're a gamer, uDAC-2SE brings realistic sound effects that put you in the game. The NuForce uDAC-2SE is a high-performance, 24bit/96kHz USB Digital Audio Converter (Dac) that connects your personal computer's audio to your home stereo, desktop sound system, or headphones to deliver superior sound. It improves upon our original uDAC model by providing a highly linear Tocos volume control for improved channel tracking at low listening levels, a 24bit/96kHz USB Dac, and an improved headphone amp. Powerful sound in a small, affordable package. Don't let its diminutive size fool you: the uDAC family packs a proverbial punch when it comes to improving the sound you get from your computer, meeting or exceeding the performance of audiophile-grade CD players. uDAC is also flexible: its outputs include analog Rca, digital coaxial, and high-performance headphone outputs to accommodate most computers and self-powering headphones. Why the little uDAC can make such a big difference. The DAC (Digital Audio Converter) in most laptops are typically not designed to deliver best-quality sound. This can result in subtle errors in the rebuilding process, diminishing audio quality. Advanced NuForce DACs create a warmer, more detailed approximation of the source file. Audio sounds richer and fuller, with more clarity on the high and and more depth and power in the mids and lows. You'll hear details in your favorite music you never heard before. Your favorite headphones and speakers reproduce sound to their full potential. About Asynchronous USB Audio The uDAC-2SE (Special Edition) and uDAC-2SGE (Signature Gold Edition) are designed for Asynchronous USB Audio mode. The difference between synchronous and asynchronous USB audio is detectable by most, but best left for the individual audio enthusiast and audiophile to decide. That's why if you're new to appreciating high-quality USB audio, we recommend that you start with our baseline uDAC-2 model without Asynchronous USB Audio to avoid the more involved setup required for AA. If you ever decide to upgrade to a uDAC-2SE, we provide the option to purchase a kit (Sgd $189) that includes a replacement circuit board and stainless steel front and back panels* *For more information, please refer to the Async USB Audio FAQ and Setup Guide. No matter what uDAC you choose to start with, you can expect to hear detail, warmth and clarity from your computer's digital audio files you've never heard before. On listening at low volumes: If you're using the uDAC-2 with sensitive in-ear earphones and listening at low volume, please read this article about channel imbalance issues . Notes For Recording Engineer: The uDAC-2 is designed for consumer playback of digital music and has not been calibrated for professional recording. At the 9 o'clock volume indicator, there is hardly any signal; further, analog pots do not behave reliably. At normal listening levels, the volume tracking is within 1dB. The uDAC-2 volume maxes out at around 0dB input (maximum digital input). Thd+N around 1% is intentional to target the voltage rail limit in order to achieve the loudest possible, but distortionless, music playback. Short of 1% THD at 0dB input, the Dac2 is not at its voltage limit, which results in diminished volume for music.
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 Meridian Prime Desktop Headphone Amplifier at 12082.00 HKD from TREOO.com
Meridian Prime Desktop Headphone Amplifier
HK$ 12,082.00
Overview Recently, the headphone market has greatly increased in popularity, and for many it is the primary way to experience music. This choice is based not only on performance, but also feel, comfort, and style. It is with this in mind we introduce Meridian Prime Headphone Amplifier. With a new chassis design instantly identifiable as Meridian Dna, Meridian Prime delivers lifelike performance from any headphone and is designed to appeal to audio enthusiasts who seek the highest possible performance from conventional analogue audio sources. Meridian Prime provides three inputs, one dedicated and optimised to USB sources for computer audio, discrete pure analogue inputs on RCA for traditional sources, and a 3.5mm connection for portable devices such as a smart phone or tablet. Asp, or Analogue Spatial Processing, is an option for “outside the head” listening through headphones. Design Despite its diminutive size, Meridian Prime echoes the design elements of any other Meridian product, including a double skinned, bead blasted metal chassis found on Meridian’s full size components. This ensures that noise is kept away from critical audio components for lifelike details that are critical for headphone listening. The Meridian Prime Headphone Amplifier can be powered by the wall- mounted supply provided, or by the similarly sized, and styled, Meridian Prime Power Supply for even higher audio quality. The use of an external power supply means that AC noise is kept well away from the pure analogue stages of the Headphone Amplifier. Virtually all the active audio components are at the rear of the unit, as close to the connectors as possible to minimise the audio path length, and are essentially remote-controlled from the front panel. This is even true of the volume potentiometer, a high-quality Alps-type mounted near the rear of the unit, which controls the level of all outputs. A special flexible shaft coupling is employed to avoid microphony, resulting from operation of the volume knob. An analogue output is also provided so the product can be connected to an active loudspeaker, or conventional amplifier and loudspeaker system for a high-performance simple system. A 6-layer circuit board provides ground-planes and maximises signal isolation. The product is DC-coupled, for outstanding low frequency control and overall audio reproduction, and absolute phase is maintained throughout. Technology Meridian Prime will appeal to even to most demanding users with its range of input connectivity, performance, unique features, and build quality. Three front-panel headphone sockets are provided, optimised for purpose. One is a 3.5mm stereo socket for the connection of earbuds and similar devices, which presents an output impedance of 2Ω to suit these devices. The other two sockets offer an exceptionally low impedance (around 3mΩ) and are standard 1/4in stereo (tip-ring-sleeve) types, carrying both channels. They can be used to connect two pairs of headphones, or to attach a single pair of headphones wired with separate cords for left and right drivers, thus offering the opportunity to reduce headphone crosstalk. In addition to simply replaying stereo audio at the highest possible quality via headphones, the outputs also include two “Analogue Spatial Processing” modes, i and ii, which replace the typical “in the head” experience of headphone listening with a smooth, natural feeling of spatiality that is much more like listening on a pair of loudspeakers in front of the listener. The USB conversion system is powered from the interface, meaning that when it is disconnected, all digital circuitry in the unit is deactivated. The fully asynchronous USB 2.0 interface supports signals at up to 192kHz/24-bit sampling and includes Meridian resolution enhancement techniques such as oversampling and Meridian’s unique Apodising filter. Prime Apodising Filter Filters are critical in digital audio. Commonly they introduce distortion and harshness because of "pre-ringing". Early digital recordings suffer from harshness too, due to primitive filters. After painstaking research, Meridian developed a special filter that avoids pre-ringing, so it can be steeper, cleaning up the effects of early filters. The result: a better, cleaner sound from recordings old and new.
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 Shonyun Sh-301 PRO Desktop Headphone Amplifier at 3621.00 HKD from TREOO.com
Shonyun Sh-301 PRO Desktop Headphone Amplifier
HK$ 3,621.00
The amplifier section itself in this machine is designed around a combination of TI Opa627 opamps with a discrete buffer comprised of Mje15030 and Mje15031 transistors from ON Semiconductor. Packed in with plenty of power, the soundstage blends in with proportion. The 301 PRO has an exciting sound, yet cause the listener little fatigue when listened over long periods. Fins on the left and right side act as heat sinks which helps the Class A design dissipate heat. The 301 PRO is a very compact unit with a separate outboard power supply. Some other components used are the Elan heat electrolytic capacitors and Philips electrolytic capacitors. Internally, the 34V regulated power supply unit is almost entirely filled by the large toroidal transformer.
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SoundMAGIC A10 Portable Headphone Amplifier at 544.00 HKD from TREOO.com
SoundMAGIC A10 Portable Headphone Amplifier
HK$ 544.00
Discover true high-fidelity sound with outstanding clarity in a small but mighty package with SoundMAGIC's A10 headphone amplifier. Share your music without reduction in sound quality, increase the volume of high impedance headphones, whilst reducing battery drain from your MP3 player with clean, accurate sound amplification and optional XB bass boost. Designed for high impedance and low sensitivity headphones, the A10 from SoundMAGICdelivers on every account - no matter what you throw at it. The small size and weight make theA10 the ideal sonic partner for your portable audio setup. Your headphones will be protected from damage thanks to the clever circuit safeguard. Charging is a doddle with the mini USB charging port the internal battery gets it's power straight from your PC or laptop. Save Battery Life As the headphones pull the power from the amplifier, battery drainage of your audio source is reduced. Portable Design With a lightweight and compact size the SoundMAGIC A10 is the perfect travelling partner. Easy Charge The internal battery is charged via mini USB from PC or laptop - no need to carry separate batteries with you. Complete Package Included in the package of the A10 are all the necessary cables to connect to portable audio players and for connecting a second pair of headphones. Also comes with a handy travel pouch.
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 Questyle Audio Cma800R Desktop Headphone Amplifier at 16477.00 HKD from TREOO.com
Questyle Audio Cma800R Desktop Headphone Amplifier
HK$ 16,477.00
Hear your music for the first time! Questyle Audio’s outstanding "Current Mode Amplification" technology (subject to a PCT patent held by and the core technology designed and developed by, Questyle Audio CEO and founder Wang Fengshuo) provides the airiness and musicality of a tube amp while maintaining the speed and accuracy of transistors. What is Current Mode Amplification? In current mode amplification, the signal is amplified by modulating current instead of Voltage. It is widely applied in the high speed communication industry and the video processing industry, but it is Questyle Audio’s patented technology as applied to headphone amplifiers. Why We Choose Current Mode Amplification? Low distortion and wide bandwidth are the goals of all high performance amplifiers. Only with ultra wide bandwidth and high speed processing can an amplifier wonderfully process sudden pulse wave signals, and achieve realistic playback of music signal with speed and transparency. To achieve this Questyle Audio abandoned the traditional voltage mode format and developed “Current Mode” amplification. When the component is working in Current mode, the amplifier Slew Rate (Sr) achieves a linear increase as input signal amplitude increases, in direct proportion to the input signal amplitude. When receiving a high amplitude signal, a “Current Mode” amplifier’s SR is much faster than traditional Voltage mode devices, totally eliminating Timd and ensuring a high amplitude signal with an extremely wide linear bandwidth and an almost distortion free realistic playback. An Excellent Headphone Amplifier with Outstanding Performance Specifications 10mm Thick Aluminium Cover and Bottom Chassis The Questyle Audio CMA800R’s aluminum chassis is produced by Foxconn using precise CNC tooling machines. The upper cover and bottom chassis “mutual bit” structural design, provides the Questyle Audio Cma800R with stable heat, excellent control of sympathetic vibration and excellent shielding from Rfi/emi radiation. Mono Full Balanced Function The Questyle Audio Cma800R is the world first headphone amplifier to offer Mono Full Balanced output. To create a proper balanced output, a stereo amp is required for each channel. Rather than compromise by using a transformer or resistors, Questyle takes advantage of this by allowing you to switch two Questyle Audio CMA800Rs into “Mono” mode, putting each one into a “Mono Full Balanced” configuration, effectively bridging them in a “Duel Mono” set up. The output power is four times that of a single Questyle Audio Cma800R, separately driving the left and right channels, with an ultra-low 0.00038% distortion, and unparalleled channel separation, able to drive high impedance and low sensitivity headphones deeply, improving resolution and dynamics. In this Dual Mono configuration, each channel’s power supply and amplification are independent, providing first class driving power, which is especially outstanding in driving difficult to drive headphones or headphones which lack in sound field or separation.
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FiiO A5 Portable Headphone Amplifier - Titanium at 1094.00 HKD from TREOO.com
FiiO A5 Portable Headphone Amplifier - Titanium
HK$ 1,094.00
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 Lehmann Audio Rhinelander Desktop Headphone Amplifier - Black at 3297.00 HKD from TREOO.com
Lehmann Audio Rhinelander Desktop Headphone Amplifier - Black
HK$ 3,297.00
Despite all the down-to-earthness of an entry-level model – this ambitious headphone amplifier will open up a whole new world of musical enjoyment to you. The Rhinelander stands fully in the high-end tradition of the Lehmannaudio products. With its superior set of features it shows a marked contrast to other devices in its price class. If you have taken a sceptical stance towards headphones so far, the Rhinelander will fully convince you of the contrary. From now on using headphones will never again be a compromise aiming to keep domestic peace, but a pleasant way to fully indulge in your passion for music. Ultra low-noise, transparent and with an impressive performance potential … an addictive sound experience is awaiting you. "Perhaps, more than with any affordable headphone amp we can recall, the sound just keeps you there listening after bedtime and you’ll find yourself enjoying familiar recordings as never before." — Hi-Fi Choice Your first step into the world of headphone amps The sonic kinship with the Linear reference device is due to the specially selected, high-grade components and sophisticated circuit design. The Rhinelander has a well dimensioned, discrete class A solid-state output stage with no overall negative feedback, which holds sufficient power reserves available for most common headphones and also gives your favourite sounds an impressive clarity. An impressive all-rounder Moreover, our entry-level model is equipped with plenty of other audiophile components: for instance, we have chosen low-loss MKP capacitors for the audio path and a double-sided pc board for an optimum layout. Low ESR electrolytic capacitors in the power supply, an integrated voltage gain stage and a Neutrik headphone socket serve to optimise the audiophile device. The volume controls are handpicked to ensure a high synchronism and to keep localisation as stable as on the recording. In addition the Rhinelander features two inputs plus an input selection via a high-quality relay. By the way, it also knows how to delight as a high-class single-source preamplifier. The single-source preamp mode is active as default setting. Such an elaborate construction with exquisite components is unique in a headphone amplifier of this price range.
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FiiO E02i Rocky Portable Smartphone Headphone Amplifier - Silver at 220.00 HKD from TREOO.com
FiiO E02i Rocky Portable Smartphone Headphone Amplifier - Silver
HK$ 220.00
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Icon NuForce DAC Desktop Headphone Amplifier & USB DAC - Black at 2193.00 HKD from TREOO.com
Icon NuForce DAC Desktop Headphone Amplifier & USB DAC - Black
HK$ 2,193.00
Icon DAC is a newly designed DAC with very high power headphone amp and supports Android*, PC and Mac. Its performance is as good as the award winning Icon Hdp. Note that DSD playback support is limited to using foobar200 player on the Windows 7 and 8 OS. The innovative NuForce Icon DAC delivers the latest mobile device connectivity by supporting USB Audio for Android (4.1 and beyond with Otg), Mac and PC (with advanced PCM and Dsd), a high-power headphone amplifier, a linear volume control and genuine audiophile construction throughout. With the advent of Smartphones and their enormous storage capabilities, a great many audio enthusiasts have been longing for a quality DAC/headphone amp they can simply plug into in order to experience their favorite music delivered with vivid clarity. The Icon DAC stands as the ideal solution for mobile music listeners seeking audiophile-grade performance. This versatile device features a USB input compatible with typical Windows or Mac computer-based setups, as well as Android 4.1.1* (with optional OTG cable). In addition, employed simply as a headphone amp or preamp the Icon DAC provides a secondary analog input for stereo signals from most home-audio and mobile sources.
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FiiO K5 Docking Desktop Headphone Amplifier at 1094.00 HKD from TREOO.com
FiiO K5 Docking Desktop Headphone Amplifier
HK$ 1,094.00
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Teac Ud-501 Desktop Headphone Amplifier & USB Pcm/dsd DAC - Silver at 5489.00 HKD from TREOO.com
Teac Ud-501 Desktop Headphone Amplifier & USB Pcm/dsd DAC - Silver
HK$ 5,489.00
TEAC's new Ud-501 is the star of the 501 series. The Ud-501 supports Direct Stream Digital (Dsd) playback at either 2.8 MHz or 5.6MHz (Dxd) rates. PCM audio is supported up to 384kHz/32-bit resolution. It connects to your computer over USB using Asio 2.1 or DoP. The output section of the Ud-501 features two BurrBrown 32-bit DACs per channel and JRC Muses op amps, also with a dual monaural design. Both balanced XLR and unbalanced RCA outputs are available to connect to your power amplifier. A toroidal-core power supply ensures top performance and clean transient playback, for quality that outperforms components five times its price. Advanced Digital Circuits for Hi-resolution Audio Formats DSD 2.8/5.6MHz Native File Playback by Asio 2.1 or DoP Both 2.8MHz and 5.6MHz DSD files are processed in native mode to properly convert DSD into an analog signal, and skipping PCM conversion in between. Asio2.1 and DoP (Dsd over Pcm) playback are also supported. (Mac supports DoP only, with standard driver) Up to 32bit/384kHz PCM File Playback With PCM file format, files from 44.1kHz/16-bit to 384kHz/32bit resolution are supported. Asynchronous Transfer Mode Transfer timing is controlled by more accurately by ignoring the clock signal from a PC, nearly eliminating clock-noise and allowing digital data to travel un-affected. Variety of Digital Filter Settings and Preferences Three types of digital filters are provided for PCM playback, while 4 types of cut-off filters are provided for DSD playback. Also, shutting down unnecessary circuits – USB circuit when S/pdif inout is selected, or Line Out circuit when Headphones are connected – for purer audio processing. Reducing Jitter Noise by 192kHz Up-Converting With a PCM file sampling at a frequency less than 192kHz, users are able to convert up to 192kHz in order to reduce jitter noise, or keep the original sampling rate to enjoy the original sound. Pure Audio Circuits With Classic Audio Pedigree Dual Monaural Circuits to Eliminate Signal Interference and Maximize Performance. Every single part of the digital and analog sections are designed in dual monaural design to eliminate interfering noise to other channels. This maximizes the potential of the the DAC and the operational amplifiers, and achieves a purer audio processing signal. 32bit-compatible BurrBrown Pcm1795 on Each Channel The celebrated BurrBrown Pcm1795 D/A converter is used on each channel, which supports 32bit audio with a 123dB S/N Ratio. D ual Muses8920 Operational Amplifier on Each Channel Two Muses8920 operational amplifiers are used on each channel. The Muses8920 was developed for hi-fi components to deliver clear, 3-dimensional sound. Individual Toroidal-core Power Transformer on Each Channel – Maintaining Total Dual Monaural Design The two toroidal-core power transformers offer a stable current supply with energy-effcient operation. Using a pair of power transformers, one each for the left and right channel, ensures that current is delivered exclusively to each channel. RCA Output with Parallel Buffer for Better Drivability Two operational amplifiers are connected in parallel with the line out circuit section to improve of line-out signal drive. This helps achieve a more linear analog output signal than any other known method. Large Number of Inputs & Outputs for Full-Scale Hi-Fi System Integration The Ud-501 provides two optical and coaxial digital inputs, one pair of XLR and one pair of RCA analog audio outputs. The RCA lineout jacks have an exclusive clearance zone, so a high grade pin cable with a large shell is able to be connected. The output terminal is selectable to either RCA or Xlr. The XLR output connectors have switchable polarity, either pin 2 HOT or pin 3 Hot, to accomodate vintage amplifiers. A standard detachable IEC cable with 3-polar socket allows user to upgrade to high-grade AC cables.
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AudioQuest DragonFly Black Portable Headphone Amplifier & USB DAC at 874.00 HKD from TREOO.com
AudioQuest DragonFly Black Portable Headphone Amplifier & USB DAC
HK$ 874.00
The Original DragonFly Launched in 2012, press and public alike have enthusiastically embraced AudioQuest’s multi-award-winning DragonFly USB digital-to-analog converter/preamp/headphone amp as the rare audio product that bridges the gap between die-hard audiophiles and mainstream music lovers. DragonFly plugs into a computer’s USB port to bypass the computer’s compromised audio circuitry and deliver cleaner, clearer, more naturally beautiful sound to headphones, powered speakers, and complete audio systems. Small, affordable, easy to use, and remarkably effective, DragonFly was named Stereophile’s 2012 “Computer Audio Component of the Year” and 2012 “Budget Component of the Year;” Tone Audio’s 2012 “Digital Product of the Year;” Computer Audiophile’s 2012 “Computer Audiophile Product of the Year;” AudioStream’s “Greatest Bits;” and What Hi-Fi?’s 2014 “Product of the Year.” Perhaps most memorably, DigitalAudioReview.net’s John Darko quipped: “A DAC with the DragonFly’s performance at the DragonFly’s price point is as rare as rocking horse sh*t.” We couldn’t have said it better. The Next Generation: DragonFly Black & DragonFly Red While the original DragonFly defined the market for micro-DACs, its USB power draw made it compatible with computers only. Music lovers have craved a more portable version—one that could be reliably used with Apple and Android smartphones and tablets. We’re delighted to present two new options that do just that: DragonFly Black and DragonFly Red. Convenience and performance are no longer mutually exclusive. With DragonFly Black and Red, any computer, laptop, tablet, or smartphone can be used as a true high-fidelity music player, allowing music lovers to enjoy beautiful sound wherever they go, whenever they please. AudioQuest, Gordon Rankin, and Microchip: A Beautiful Partnership AudioQuest and DragonFly designer Gordon Rankin worked alongside Microchip Technology to develop a new high-performance, full-speed USB microcontroller solution that delivers improved signal-to-noise ratio and significantly lower power consumption. Drawing 77% less current than the previous microcontroller, the new Microchip Pic32Mx microcontroller enables true compatibility with Apple and Android smartphones and tablets. Further, we simply cannot overstate the significance of Gordon Rankin’s contributions to AudioQuest. The new DragonFly models embody many of Gordon’s most innovative, creative, and elegant digital-audio solutions to date. Improved 32-Bit Digital Performance For greater overall performance, the new DragonFly models also incorporate improved 32-bit ESS Sabre DAC chips—the 9010 in Black and the higher-performance 9016 in Red—both of which employ minimum-phase filtering for naturally detailed, more authentic sound. While DragonFly Black uses the same high-quality headphone amp and analog volume control found in DragonFly v1.2, DragonFly Red includes the latest ESS headphone amp and a bit-perfect digital volume control that resides on the 9016 DAC chip itself—a sophisticated implementation that ensures maximum fidelity, dynamic contrast, and signal-to-noise ratio. DragonFly Black will output 1.2 volts—enough power to successfully drive all preamplifier input circuits and a wide range of today’s efficient headphones. Meanwhile, with its higher 2.1-volt output, DragonFly Red will be compatible with a wider range of headphones, including power-hungry, low-efficiency models. While the DAC chips we’ve selected are remarkably powerful and sophisticated, we’ve intentionally limited DragonFly Black and DragonFly Red’s processing capabilities to 24-bit/96kHz resolution. This makes using the DragonFlys as simple as it’s always been: they’re fully compatible with PCs without having to download and install new drivers. Most importantly, DragonFly is designed to honor the music you already own and love. Whether you’re listening to Spotify, YouTube, Tidal, ripped CDs, or state-of-the-art high-resolution files, DragonFly will deliver a more emotionally compelling and enjoyable experience. Free Desktop Application for Software Upgradability (for DragonFly Black and Red only) In addition, the new DragonFlys will be software upgradeable through a complimentary Windows or OS X desktop application. As new developments arise in music player applications, streaming protocols, or other associated software, DragonFly users will be able to incorporate those updates to their existing devices. Only the Beginning Introduced to the media at the 2016 Consumer Electronics Show, DragonFly Black and DragonFly Red were named “Stars of Ces” by What Hi-Fi? Magazine. But this is only the beginning. We look forward to building stronger, more meaningful connections between music enthusiasts and the artists, albums, songs, and videos they love. Our hope is that with DragonFly Black, DragonFly Red, and future AudioQuest digital products, more people than ever before can enjoy beautiful music—wherever they go, whenever they please.
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Cayin C5 Portable Headphone Amplifier at 1314.00 HKD from TREOO.com
Cayin C5 Portable Headphone Amplifier
HK$ 1,314.00
Beautiful. Natural. Three-dimensional. Lush. Holographic. Powerful. Detailed. These are just some of the words audiophiles around the world are using to describe the Cayin C5 Portable Headphone Amplifier. Packed inside its compact and elegant aluminum shell you’ll find dedicated high-performance audio components including an Opa134 amp and Lme49600 buffer, a Japanese precision Alps volume pot, Fujitsu’s premium hi-fi relay, German Wima capacitors, a Texas Instruments hi-fi headphone power driver, and a perfect protection circuit for fully-protected, noiseless audiophile-grade power suitable for driving the most sensitive IEMs and some of the most power hungry full-size reference headphones. The Cayin C5 is a portable powerhouse, literally. With its rated 12-hour battery life, you'll have enough juice to last you through the day. Plus, it doubles as a power supply to boost or charge your other micro-USB devices with the included Micro-USB to USB 2.0 cable! If you’re looking for versatility (hi- and low-gain settings), meaty low end (bass boost switch) and balanced highs, and an amp that promises reference-level performance at an entry-level price, look no further than the incredibly detailed, smooth and enveloping performance of the Cayin C5 Portable Headphone Amplifier; it’s the only companion you’ll need for your on-the-go listening needs.
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 Schiit Audio Valhalla 2 Desktop Headphone Amplifier at 3017.00 HKD from TREOO.com
Schiit Audio Valhalla 2 Desktop Headphone Amplifier
HK$ 3,017.00
Go ahead. Do things with Valhalla 2 that you’d never attempt with other OTL tube amps. Run low-impedance headphones. Use IEMs. Valhalla 2 is a complete re-imagining of Valhalla, with improved performance, higher output capability, lower distortion and output impedance. Tubes Made Flexible While most tube OTL amps are really only designed for 300 ohm Senns and 600 ohm Beyers, Valhalla 2 stretches to include headphones that you’d never expect to use with a tube amp. Go ahead. Use it with Grados. Run it with AKGs. Rely on it for many IEMs. You may even like it with high-efficiency planars like Lcd-X, Lcd-Xc, Oppo Pm-1 and He-400. A Complete Desktop Preamp Valhalla 2 also adds two important features: preamp outs and a gain switch. Preamp outs let you connect your powered monitors directly to Valhalla 2, to give them some of what some people call “tube magic.” The gain switch gives you better control of both output level and impedance, for better matching to your headphones. It's easy to build a complete desktop system around the Valhalla. Not Your Father’s Tube Amp If you’re expecting syrupy, tubby, euphonically colored tube sound, you’re in for a shock. Valhalla 2 is exceptionally accurate, neutral, and resolving, without being strident or etched. Made in USA By “made in Usa;” we mean made in Usa. The vast majority of the total production cost of Asgard 2—chassis; boards, transformers, assembly, etc—goes to US companies manufacturing in the US. Our board house is 20 minutes away from our office in Newhall. Our chassis guys are just over the hill in the Valley. 5-Year Warranty Asgard 2 is covered by a limited warranty that covers parts and labor for five years. That’s 5 years. Yes. Five. Which is up to 5X that of our competition, if you weren’t so hot at math. Note the marketing weasel-wording “up to.”
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FiiO E07K Andes Portable Headphone Amplifier & USB DAC at 764.00 HKD from TREOO.com
FiiO E07K Andes Portable Headphone Amplifier & USB DAC
HK$ 764.00
Andes (E07K) is the updated version of E7.It can bring you to experience the high quality acoustics playback. Lossless music format (96 KHz/24 Bit) contains details that ordinary CD (44.1 KHz/16 Bit) does not embody. On the basis of former E7, Andes (E07K) added some functions which include "right & left channel balance settings”; “bass and treble adjustment”; “line output”; “gain selection" and "hold key" Double using environments--indoors and outdoors make using become very convenient .
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Shure Sha900 Portable Headphone Amplifier & USB DAC at 7961.00 HKD from TREOO.com
Shure Sha900 Portable Headphone Amplifier & USB DAC
HK$ 7,961.00
Premium. Portable. Optimal performance for headphones and earphones. The Sha900 Portable Listening Amplifier is a premium portable audio amplifier with digital-to-analog conversion (Dac) for use in-line between portable digital audio sources and high-quality headphones or earphones. The Sha900 features customizable 4-band parametric EQ, rechargeability and can process both digital and analog audio sources, or bypass for a pure analog signal. A new standard of portable listening that brings high-fidelity audio into the mobile demands of today’s active lifestyles. The earphones and headphones you love, only better. Sacrificing sound quality when you’re on the go is a thing of the past with the Sha900 Portable Listening Amplifier. Use it with your mobile device to enhance the experience of your favorite earphones and headphones. In-ear or over-the-ear. Love what you hear. Whether you prefer your music nestled in your ear with a perfect seal or resting on top like a pillow of sound, you can enhance your listening enjoyment with the Sha900. Check out the new colour variations of our flagship Se846 Sound Isolating™ Earphones. Pair them with the Sha900 for an exceptional blend of style and substance.
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Shozy Px-M1 Portable Headphone Amplifier - Black at 2193.00 HKD from TREOO.com
Shozy Px-M1 Portable Headphone Amplifier - Black
HK$ 2,193.00
This stylish and sleek portable headphone amp will breathe new life into your audiophile setup while on the go.
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 Heir Audio Rendition 1 Portable Headphone Amplifier - Black at 2742.00 HKD from TREOO.com
Heir Audio Rendition 1 Portable Headphone Amplifier - Black
HK$ 2,742.00
Heir Audio is very pleased to launch our first portable amplifier, Rendition 1, worldwide. After a full year research and development, our engineers have designed a unique personal amplifier with excellent sound quality supported by a long lasting battery. Just like our any other products, Rendition 1 carries the Heir Audio signature of exquisite design concept with the delicate black carbon fiber on the both sides. Rendition 1 has further expanded our product line and once again reinforced our belief that each one of our products is a unique acoustical and artistic expression of the beauty of music! The successful preorders have approved the acceptance of this wonderful amplifier! The Rendition 1 is an exciting portable amp, that in keeping with Heir Audio tradition, sounds as good as it looks, and looks as good as it sounds. The sound quality can be described as “black” (quite) or without back ground hiss. The concept behind the amp was to add more “depth” and “control” to the music, rather than adding colouration. If bass is present in the music, the amp is there, waiting to add more depth; if there are highs in the music, the amp delivers those as well cleanly and clearly. The Rendition 1 is available in two case colours, black or silver, accented with black carbon fiber, rendering a look of unsurpassed class.
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V-MODA Vamp Verza Portable Headphone Amplifier & USB DAC for Smartphones at 4940.00 HKD from TREOO.com
V-MODA Vamp Verza Portable Headphone Amplifier & USB DAC for Smartphones
HK$ 4,940.00
World's First Universal Docking Headphone Amplifier/Digital-to-Analog Converter/Battery Pack "the analog-age spirit of solid components modernized into a mobile hi-fi system" -Val Kolton, V-Moda CEO Universal Compatibility: Designed for portable devices including newer Androids*, iPhone, iPad, iPod as well as Mac and Windows OS Desktop/Portable: Use as a desktop, portable amplifier or hi-fi sound card via USB audio Award-Winning Sound: V-MODA's legendary acoustics, winner of dozens of prestigious media awards Designed in Italy, Made in Japan: V-Angle design (patent-pending) and precision engineering using the finest components in the world Pure Power & Digital-to-Analog Conversion Vamp VERZA's dedicated DACs extracts pure digital output from your computer, Android or iOS device and converts it into analog for the purest mobile audio listening experience. Low noise components from Burr Brown and AKM which can usually only be found in hi-end digital players. 2 Dedicated DACs: USB Audio DAC (computer/Android) and iOS DAC bypasses your device's internal DAC using USB or micro-USB to reduce the number of times your sound is re-processed Burr Brown & AKM Dac: Low noise components usually found only in hi-end digital players for pure audio with less resonance, reduced background noise and improved clarity Amplifer: 150mW x 2 USB Audio / 130mW x 2 for iPhone, iPad, iPod amplifier powerful enough for high-impedence (>32 ohm) and large headphones 6-Layer Anti-Interference Pcb: 6-layer PCB isolates components on different layer for less noise and interference Rotary Volume: Metal knob and on/off switch for precision volume control Hi/Lo Gain: Switch between 80mW or 130mW/150mW output Bass/3D Button: pure mode (red), bass+ mode (green) and 3D Virtual sound button optimized for home and car audio Optical Out: SPDIF/Toslink digital audio output transforms your device into a high fidelity source (3.5mm to optical cable not included) USB Audio: Charge your Vamp or use it as a hi-fi USB Audio sound card for desktop and notebook use MFI Approved: Apple MFi official device Maximum Battery Vitality 2200 mAh Battery: 7 hours playback iDevice/USB Battery Charger: Use as a backup power source, double your smartphone battery life or charge any battery-powered USB device (results may vary by device) Machined Metal Machined Metal: Featherweight metal (190g) for portability, pack it in your bag as a backup battery pack when not in use as a headphone amplifier Unique Texture & Color: Shadow features brushed black metal in honor of vinyl with dark rouge accents, matte black is a stark silhouette that matches the Crossfade M-100 headphone, orange/white is an elegant and clean statementpuf
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 JDS Labs Objective2 Desktop Headphone Amplifier - Silver at 1149.00 HKD from TREOO.com
JDS Labs Objective2 Desktop Headphone Amplifier - Silver
HK$ 1,149.00
The Objective2 (O2) is an open source headphone amplifier designed by NwAvGuy, with emphasis on benchmark performance and low cost. This item includes a fully assembled and hand tested O2 amplifier, ready for use. You will only need an AC adapter suitable for your region. The O2 has created a stir in Head-Fi.org’s do-it-yourself community. After being banned from Head-Fi for heated discussion, he proceeded to design O2 for maximum benchmark performance to prove his points. It’s large and heavy, so hardly worth consideration as a portable amp, however, O2 lives up to its name. For more information on the O2, please refer to NwAvGuy's O2 Details article. Note: You need a separate power adapter with this device. If you do not have one, please add the G.e.z. 15Vac Power Adapter to cart. Customisation The default gain levels of the Objective2 are intended to work well with over 95% of headphones on the market. We use the stock O2 with headphones as low as 16 ohms @ 108 dB/mW, and as high as 600 ohms (very high and very low efficiency, respectively). There is no reason to change the stock gain unless you regularly listen at extremely low volumes. Gain can easily be changed by removing two resistors. You may choose for JDS Labs to set gain of 1.0x/6.5x or 2.5x/1.0x, and such customisations will only be on pre-order basis (2-3 weeks).
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 JDS Labs C5D Portable Headphone Amplifier & USB DAC - Red at 2193.00 HKD from TREOO.com
JDS Labs C5D Portable Headphone Amplifier & USB DAC - Red
HK$ 2,193.00
Asynchronous AND Galvanically Isolated C5D is a high-performance portable headphone amplifier featuring digital volume control, multi-position bass boost, dual gain, and asynchronous digital-to-analog conversion compatible with iPod, iPhone, and all Uac1 compatible operating systems. Perfect Channel Balance Digital stepped attenuation with zero-crossing detection and 1dB attenuation steps provide smooth volume adjustment at all volume levels, even with sensitive IEMs. Dual LDO Regulation High performance audio starts with clean power. Supply rails are filtered by impressive Tps7A4700 and Tps7A3301 regulators to achieve ultra low supply noise at a constant output voltage of +/-7V. Smart USB Charging Powered by a large 1200mAh Li-Ion battery, C5D quickly charges from any USB port (computer, tablet charger, cell phone charger, etc.). A single LED indicates battery status: solid green while on, blinking while battery is low, or blue while charging. Configurable Sound C5D features dual gain levels and a multiple position bass boost toggle for highly customization sound. Low Jitter C5D's asynchronous Pcm5102A DAC operates with ultra low jitter, symmetrical pairs measuring below -112dB. Low Output Impedance C5D's extremely low output impedance of 0.62 ohms ensures natural frequency response with all headphones.
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Chord Hugo Portable Headphone Amplifier & USB DAC - Silver at 15384.00 HKD from TREOO.com
Chord Hugo Portable Headphone Amplifier & USB DAC - Silver
HK$ 15,384.00
Chord Electronics Hugo USB reference grade DAC plus headphone amp is a reference-level portable product for PCM and DSD audio – a world first in audio history and the unit is based on the same Fpga DAC technology that has helped establish Chord Electronics as an authority in digital audio. The unit is called Hugo (because you can take Hugo wherever ‘you-go’); the new device offers studio-master-tape sound quality, advanced connectivity and uncompromising file playback capability, all from a palm-sized player. Hugo is the world’s most advanced headphone amp/DAC, offering five digital inputs including A2Dp aptX Bluetooth, plus advanced 384kHz PCM and DSD 128 playback for today’s high-resolution DXD (Digital eXtreme Definition) music files. The new Hugo, which can be used as both a portable headphone amp/DAC as well as a reference-level source component in a static system, brings the renowned digital audio expertise of Rob Watts and Chord Electronics to serious headphone listening, enabling consumers to experience a world of super-high-resolution music via their headphones. It offers unsurpassed performance and technology and is unrivaled in the marketplace, thanks to its bespoke technology, Fpga circuitry and advanced file-playback capability.
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 Audinst Hud-Dx1 Desktop Headphone Amplifier & USB DAC - White at 3841.00 HKD from TREOO.com
Audinst Hud-Dx1 Desktop Headphone Amplifier & USB DAC - White
HK$ 3,841.00
Hud-Dx1 allows its users to enjoy high-level Hi-Fi sound world by supporting replay of high-quality DSD sound source (2.8/5.6MHz) in native mode using USB bus power alone, DXD sound source (352.8/384kHz), another high-quality sound format, as well as optical input (24bit 192kHz) and MQS (Mastering Quality Sound, 96~192kHz), Hi-Fi sound source, without any loss rendered in studio recording specification. Hud-Dx1 also allows its users to enjoy sounds with even higher output and high-quality sound when additionally connecting to the adaptor provided together. Luxurious Black and Neat White color You can meet two colors of Hud-Dx1. Black color shows luxurious and stable shape with the assembly of gold volume knob and spike, while white color shows neat and sophisticated shape with the assembly of silver knob and spike. Playback of Native DSD Equipped with the newest USB 2.0 high speed audio controller from Xmos and Es9018K2M, a high performance DAC from Ess, it supports playback of Native DSD (Dsd64 / Dsd128) as it plays back sounds in excellent definition and Hi-Fi audio quality. Additionally supports playback of 32-bit/384 kHz DXD sound source and optical input Since Hud-Dx1 is designed to support not only the playback of DXD sounds in 24-bit/352.8 kHz format, but also to support optical input functions that are not supported by products from other companies. It allows users to convert a maximum 24-bit/192 kHz PCM digital signal into a high quality analog sound output and play it back. Top class Opamp and high performance headphone amp Adopting the Muses series Opamp, a top class one specifically designed for Hi-Fi audio products by Njrc, Hud-Dx1 uses Muse8920 for its I/V converter and filter circuits for excellent matching in sound quality and optimum constitution that realizes high performance and high fidelity audio with top class sound balance and very low distortion, as well as ultra-low noise. Also equipped with Tpa6120A2, a high fidelity headphone amplifier from TI, it easily operates a headphone under 300 Ω in factory default mode and allows users to enjoy sounds with enough volume, even when using a 600 Ω high impedance headphone by removing jumper caps (Jp1, Jp2) set for headphone output gain. Convenient Portability and Compatibility Typical hi-fi DAC is inconvenient to carry around due to its large size, yet USB DAC has the advantage of being small and lightweight for the purpose of using it connected to the computer. As the unit gets smaller, the function of DAC reaches its limit and sacrifices with low quality audio sound. Our HUD-mx2 has overcome such limit to the maximum, developing ultra lightweight, compact DAC with reduced drop-off in audio quality. You can enjoy the music with highest quality possible audio sound wherever the computer is and, with its plug and play function. Adopts genuine Thesycon driver We adopted the driver from Thesycon, a German system software development company, by licensing to offer 100% functionality of high sound quality of Native DSD and stable audio playback. The Thesycon driver can be downloaded from the data center of the Audinst website. Users can download it to an Internet-capable computer. Front Panel ① & ② Headphone/Earphone Output (6.35Ø Stereo Phone Jack / 3.5Ø Stereo Mini Jack) ③ Output Selection Switch (briefly “Output Switch”; Output Toggle Switch) ④ Input selection and off switch (briefly “Input switch”; Input toggle & off switch) ⑤ Active Indicator ⑥ Potentiometer Rear Panel ⑦ Optical IN (S/pdif Optical Input, Pink Shutter) ⑧ Optical OUT (S/pdif output, Grey Shutter) ⑨ USB Port ⑩ Power Jack (DC Jack) ⑪ RCA Line Out
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 Lehmann Audio Linear Desktop Headphone Amplifier & USB DAC - Black at 8791.00 HKD from TREOO.com
Lehmann Audio Linear Desktop Headphone Amplifier & USB DAC - Black
HK$ 8,791.00
Already since 2004 the Linear has made all common headphones to shine at their very best. Extremely demanding users rely on our top model, from the West German Broadcasting Corporation to the audiophile Tacet label to Sennheiser's and AKG's headphone experts. It’s not without reason that the Linear belongs to the reference class in its genre. When you put on your headphones and load your favourite CD, the Linear will give rise to wonderful worlds before your mind’s eye. Physical, punchy lows and a delicate resolution reveal your favourite tracks in all their glory over the entire frequency bandwidth. Carefully selected components and an extremely sophisticated circuit design establish the foundation of our number on. "The best we've come across." — What Hi-Fi A universal champion With three gain settings it gives you an impressive listening pleasure, keeping an eye on your needs anytime – and this using a vast array of headphones on the most diverse sound sources. In this context we have, of course, taken into account the varying performance requirements and sensitivity levels of the headphone types currently available on the market. If you want to enjoy your musical treasures via PC or iPad, the Linear with the optional USB feature offers the solution. And if you would like to share your joy at this quality of music reproduction with family and friends, our multiple test winner will be happy to feed two headphones at the same time. Of course, the listening enjoyment will remain equally fabulous then. The two parallel outputs of the discrete class A solid-state output stage.provide the basis of this double musical enjoyment. A propos: if you wish so, the Linear will also stimulate your active speakers to a stunning vitality. In every situation a magnificent sound, always striving for perfection – such is our Linear.
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Audio-Technica At-Ha26D Headphone Amplifier at 1912.00 HKD from TREOO.com
Audio-Technica At-Ha26D Headphone Amplifier
HK$ 1,912.00
- 24bit / high-performance D / A converter that can support 192kHz (Ak4396). - High-quality optical digital input equipment corresponding to 192kHz. -Equipped with line output, can also be used as a high-quality D / A converter. - Ridgid aluminium alloy body to prevent any vibrations.
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 Audinst HUD-Mini Desktop Headphone Amplifier & USB DAC at 1259.00 HKD from TREOO.com
Audinst HUD-Mini Desktop Headphone Amplifier & USB DAC
HK$ 1,259.00
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 Schiit Audio Asgard 2 Desktop Headphone Amplifier at 2467.00 HKD from TREOO.com
Schiit Audio Asgard 2 Desktop Headphone Amplifier
HK$ 2,467.00
Asgard 2 is the next generation of one of the most popular headphone amps in the world, boasting higher performance and convenience features such as switchable gain and preamp outputs. It’s a versatile control center for your desktop system, ideal for most headphones from IEMs to orthos, and with pre outs for powered desktop speakers. Significantly Improved Performance We used what we learned in Mjolnir to significantly improve Asgard 2’s performance. A high-voltage, cascoded Jfet gain stage feeds a high-current Class A Mosfet output section. The 80V rails on the gain stage allow us to reduce distortion, while retaining Asgard’s no-overall-feedback design in high-gain mode. Additional Versatility: From IEMs to Orthos to Active Monitors Asgard 2 offers two gain settings. The low-gain mode is perfect for high-sensitivity IEMs, while the high-gain mode is ideal for most other headphones, up to and including many orthodynamics. In addition, the preamp outputs can easily be connected to powered speakers, for a complete desktop system. Made in USA By “made in Usa;” we mean made in Usa. The vast majority of the total production cost of Asgard 2—chassis; boards, transformers, assembly, etc—goes to US companies manufacturing in the US. Our board house is 20 minutes away from our office in Newhall. Our chassis guys are just over the hill in the Valley. 5-Year Warranty Asgard 2 is covered by a limited warranty that covers parts and labor for five years. That’s 5 years. Yes. Five. Which is up to 5X that of our competition, if you weren’t so hot at math. Note the marketing weasel-wording “up to.”
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Creative SoundBlaster E1 Portable Headphone Amplifier & USB DAC at 435.00 HKD from TREOO.com
Creative SoundBlaster E1 Portable Headphone Amplifier & USB DAC
HK$ 435.00
Creative Sound Blaster E1 Portable Headphone Amplifier with Integrated Mic and Dual Headphone Jacks for PC and Smartphones Sound Blaster E1 is a portable and powerful headphone amplifier with support for studio-quality 600 ohm headphones, audio playback, and two headphone jacks for easy music sharing with your friends. Enjoy Studio Quality Audio Tired of having to choose specific headphones impedances to match your setup? The Sound Blaster E1 supports headphones with impedances of up to 600 ohms. This means you can match just about any headphones with it. Enjoy a level of audio detail and resolution previously unreachable. High Fidelity Audio and Clear Voice Conversations Enjoy your music on the go with jaw-dropping audio fidelity of 106dB Signal-to-Noise Ratio (Snr). Hear more music, not noise. The built-in microphone provides the additional benefit of using your normal headphones for conversations over the phone. When connected to PCs and Macs via Usb, you can activate the CrystalVoice technology, a suite of enhancements that reduces noise and provides for clearer conversations. Lighter, Always Better Sound Blaster E1 is small and light at only 25 grams. This means it can be easily carried around in a bag or a pocket, or clipped onto clothing. No longer will you have to haul a headphone amplifier the size of a brick to enjoy better audio. Sound Blaster E1 also performs up to 25 hours per charge. That's more than a whole day of high fidelity continuous playback. Share Your Music the Better Way Sharing your music is easy with the Sound Blaster E1 which comes with two headphone output jacks. Unlike other shared outputs, the Sound Blaster E1 does not compromise on audio fidelity, so the quality remains the same even when powering two discrete outputs. Personalize Your Audio Experience With SBX Pro Studio technology and connected to PCs and Macs, you can further adjust what you love to listen, to your individual taste. Enjoy reduced latency with Audio Stream Input/Output (Asio) support with the Sound Blaster E1. Hear your audio recordings come to life.
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Icon NuForce uDAC-2SGE Portable Headphone Amplifier & USB DAC - Signature Gold Edition at 3187.00 HKD from TREOO.com
Icon NuForce uDAC-2SGE Portable Headphone Amplifier & USB DAC - Signature Gold Edition
HK$ 3,187.00
A must-have laptop companion! Discover digital music's true headphone potential. The NuForce uDAC-2 Signature Gold Edition is a high-performance 24bit/96kHz USB Digital Audio Converter (Dac) that connects your personal computer's audio to your home stereo, desktop sound system, or headphones. The subtle brilliance of the Swarovski crystal gracing the uDAC-2 SGE’s volume control, along with the unit's lustrous gold-plated case, allude in handsome fashion to its no less attractive performance capabilities. For the eye as well as the ear, the uDAC-2 SGE cannot but enhance the most elegant desktop array. With its extensive power supply, filtering capabilities and charge-pump circuit as a foundation, the uDAC-2 SGE processes incoming data via a USB audio receiver. A D/A converter chip then translates the data to a 2V analog signal. uDAC-2 SGE's performance equals or exceeds that of many audiophile CD players. Its exemplary flexibility -- analog Rca, digital coaxial, and high-performance headphone outputs -- is bound to satisfy the needs of the most critical music lover.If you own a laptop and love music, you need a NuForce uDAC-2. If you're a gamer, uDAC-2 brings realistic sound effects that put you in the game. Powerful sound in a small, affordable package. Don't let its diminutive size fool you: the uDAC family packs a proverbial punch when it comes to improving the sound you get from your computer, meeting or exceeding the performance of audiophile-grade CD players. uDAC is also flexible: its outputs include analog Rca, digital coaxial, and high-performance headphone outputs to accommodate most computers and self-powering headphones. Why the little uDAC can make such a big difference. The DAC (Digital Audio Converter) in most laptops are typically not designed to deliver best-quality sound. This can result in subtle errors in the rebuilding process, diminishing audio quality. Advanced NuForce DACs create a warmer, more detailed approximation of the source file. Audio sounds richer and fuller, with more clarity on the high and and more depth and power in the mids and lows. You'll hear details in your favorite music you never heard before. Your favorite headphones and speakers reproduce sound to their full potential. About Asynchronous USB Audio The uDAC-2SE (Special Edition) and uDAC-2SGE (Signature Gold Edition) are designed for Asynchronous USB Audio mode. The difference between synchronous and asynchronous USB audio is detectable by most, but best left for the individual audio enthusiast and audiophile to decide. That's why if you're new to appreciating high-quality USB audio, we recommend that you start with our baseline uDAC-2 model without Asynchronous USB Audio to avoid the more involved setup required for AA. If you ever decide to upgrade to a uDAC-2SE, we provide the option to purchase a kit (Sgd $189) that includes a replacement circuit board and stainless steel front and back panels* *For more information, please refer to the Async USB Audio FAQ and Setup Guide. No matter what uDAC you choose to start with, you can expect to hear detail, warmth and clarity from your computer's digital audio files you've never heard before. On listening at low volumes: If you're using the uDAC-2 with sensitive in-ear earphones and listening at low volume, please read this article about channel imbalance issues . Notes For Recording Engineer: The uDAC-2 is designed for consumer playback of digital music and has not been calibrated for professional recording. At the 9 o'clock volume indicator, there is hardly any signal; further, analog pots do not behave reliably. At normal listening levels, the volume tracking is within 1dB. The uDAC-2 volume maxes out at around 0dB input (maximum digital input). Thd+N around 1% is intentional to target the voltage rail limit in order to achieve the loudest possible, but distortionless, music playback. Short of 1% THD at 0dB input, the Dac2 is not at its voltage limit, which results in diminished volume for music.
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 Audinst Hud-Mx2 Desktop Headphone Amplifier & USB DAC at 2303.00 HKD from TREOO.com
Audinst Hud-Mx2 Desktop Headphone Amplifier & USB DAC
HK$ 2,303.00
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Audio-Technica AT-PHA100 Headphone Amplifier at 3531.00 HKD from YesAsia
Audio-Technica AT-PHA100 Headphone Amplifier
HK$ 3,531.00
Audio-Technica AT-PHA100 Headphone Amplifier
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NuForce Hap-100 Desktop Headphone Amplifier - Silver at 4390.00 HKD from TREOO.com
NuForce Hap-100 Desktop Headphone Amplifier - Silver
HK$ 4,390.00
The Hap-100 is a preamp and headphone amplifier for the audio enthusiast for whom quality headphone listening is a priority. The HAP-100's innovative design offers features never before available at its modest price point. Most significantly, the Hap-100 shares technologies first employed in our flagship P-20 preamp, along with other audiophile-grade developments. As with the remarkable P-20, the Hap-100 exploits NuForce's most recent work in volume controls. At the unit's core is a switched-resistor ladder network of low-noise, thin-film resistors, one per volume setting, permitting discrete, high-resolution increments of 1dB for the HAP-100's one hundred volume steps.
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Icon NuForce iDo Portable Headphone Amplifier & USB DAC - Blue at 2116.00 HKD from TREOO.com
Icon NuForce iDo Portable Headphone Amplifier & USB DAC - Blue
HK$ 2,116.00
NuForce Icon iDo is an Audiophile-Grade DAC and Headphone Amp for iPad®; iPhone® and iPod Touch®. iDo extracts audio data in its original digital form (in USB Host mode) from Apple mobile digital devices, delivering bit-perfect, low-jitter, audiophile-quality music file playback. The Icon iDo delivers audiophile-grade CD quality sound to digital music files stored on Apple® mobile digital devices. iDo is ideal for music enthusiasts and musicians alike who primarily listen to—and have their digital music libraries stored on—these devices. Apple products are becoming the hub of a person’s entire music and audio collection, so improving the audio quality produced by these devices is key. The Icon iDo delivers on that at very affordable price point. A fast and easy connection. Using the Icon iDo is simple. Users can connect any Apple mobile device to the Icon iDo with the Apple® approved and included 30-pin sync/charging cable, attach the power supply, and then plug the Icon iDo into a home stereo system using RCA cables or a single coaxial. Users can also plug in headphones directly into the Icon iDo for personal high quality sound playback in a manner the artist intended it to be heard. How iDo makes music stored on Apple devices sound even better? Apple uses its own audio codec, Apple Lossless Encoder (Ale), to compress and store music files on its devices in original CD quality without loss. However, even ALE files only sound as good as the default DAC (digital-to-analog converter) found within the mobile digital device. Icon iDo bypasses the built-in DAC and extracts the audio data stored on the device in its original digital form in USB Host Mode. It then converts the high-quality files for bit-perfect and low-jitter music playback. A portable power station for the ultimate headphone listening experience. Icon iDo also offers a built-in headphone amplifier capable of powering power-hungry headsets, giving users a total audio experience. By properly powering headphones, Icon iDo enhances the auditory performance of the headphones because optimal amperage is being delivered to them, allowing for greater audio clarity. *The maximum sample rate currently supported by Apple is 16-bit/44.1kHz or 24-bit/48kHz. **Icon iDo is designed to work with Apple iTune and iPod software. Other applications may not work (but we have not found any application that is incompatible with iDo).
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Icon NuForce uDAC-2 Portable Headphone Amplifier & USB DAC - Red at 874.00 HKD from TREOO.com
Icon NuForce uDAC-2 Portable Headphone Amplifier & USB DAC - Red
HK$ 874.00
Advanced NuForce technology delivers highest-resolution audio for superior sound. If you own a laptop and love music, you need a NuForce uDAC-2. If you're a gamer, uDAC-2 brings realistic sound effects that put you in the game. The NuForce uDAC-2 is a high-performance, 24bit/96kHz USB Digital Audio Converter (Dac) that connects your personal computer's audio to your home stereo, desktop sound system, or headphones to deliver superior sound. It improves upon our original uDAC model by providing a highly linear Tocos volume control for improved channel tracking at low listening levels, a 24bit/96kHz USB Dac, and an improved headphone amp. Powerful sound in a small, affordable package. Don't let its diminutive size fool you: the uDAC family packs a proverbial punch when it comes to improving the sound you get from your computer, meeting or exceeding the performance of audiophile-grade CD players. uDAC is also flexible: its outputs include analog Rca, digital coaxial, and high-performance headphone outputs to accommodate most computers and self-powering headphones. Why the little uDAC can make such a big difference. The DAC (Digital Audio Converter) in most laptops are typically not designed to deliver best-quality sound. This can result in subtle errors in the rebuilding process, diminishing audio quality. Advanced NuForce DACs create a warmer, more detailed approximation of the source file. Audio sounds richer and fuller, with more clarity on the high and and more depth and power in the mids and lows. You'll hear details in your favorite music you never heard before. Your favorite headphones and speakers reproduce sound to their full potential. About Asynchronous USB Audio Only the uDAC-2SE (Special Edition) and uDAC-2SGE (Signature Gold Edition) are designed for Asynchronous USB Audio mode. The difference between synchronous and asynchronous USB audio is detectable by most, but best left for the individual audio enthusiast and audiophile to decide. That's why if you're new to appreciating high-quality USB audio, we recommend that you start with our baseline uDAC-2 model without Asynchronous USB Audio to avoid the more involved setup required for AA. If you ever decide to upgrade to a uDAC-2SE, we provide the option to purchase a kit (Sgd $189) that includes a replacement circuit board and stainless steel front and back panels* *For more information, please refer to the Async USB Audio FAQ and Setup Guide. No matter what uDAC you choose to start with, you can expect to hear detail, warmth and clarity from your computer's digital audio files you've never heard before. On listening at low volumes: If you're using the uDAC-2 with sensitive in-ear earphones and listening at low volume, please read this article about channel imbalance issues . Notes For Recording Engineer: The uDAC-2 is designed for consumer playback of digital music and has not been calibrated for professional recording. At the 9 o'clock volume indicator, there is hardly any signal; further, analog pots do not behave reliably. At normal listening levels, the volume tracking is within 1dB. The uDAC-2 volume maxes out at around 0dB input (maximum digital input). Thd+N around 1% is intentional to target the voltage rail limit in order to achieve the loudest possible, but distortionless, music playback. Short of 1% THD at 0dB input, the Dac2 is not at its voltage limit, which results in diminished volume for music.
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Creative Sound Blaster X-Fi HD Desktop Headphone Amplifier & USB DAC at 819.00 HKD from TREOO.com
Creative Sound Blaster X-Fi HD Desktop Headphone Amplifier & USB DAC
HK$ 819.00
Premium USB Sound Blaster quality Audiophile-grade components deliver unsurpassed USB sound card audio quality with a signal-to-noise ratio (Snr) of 114dB. SBX Pro Studio for unprecedented audio realism The ground-breaking SBX Pro Studio sound effects will transform your experience into a true High-Definition (Hd) multimedia emotional journey. Direct recording from your turntable Phono preamp with Riaa EQ allows direct connection of your turntable to the USB sound card to conveniently convert your vinyl to CDs or MP3s. Superior headphone experience High quality headphone amp supports studio-quality headphones (e.g. Hardware accelerated EAX 5.0 for ultimate gaming audio Hardware-powered 3D positional audio and EAX 5.0 effects provide stunning audio realism over both headphones and speakers without affecting your frame-rates. Works with Windows 8 We have updated audio drivers that will allow you to enjoy the ultimate in Sound Blaster performance in Windows 8.
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 Cambridge Audio DacMagic XS Portable Headphone Amplifier & USB DAC at 1363.00 HKD from TREOO.com
Cambridge Audio DacMagic XS Portable Headphone Amplifier & USB DAC
HK$ 1,363.00
DacMagic XS - Our best ever portable DAC The DacMagic XS USB Digital to analogue converter (Dac)/ headphone amp is an instant upgrade to any computer’s sound output. It connects quickly and easily to any USB port and allows you to hear your favourite music and movies with every drop of detail, exactly as the artist intended. Enhance Your Music Whilst your computer might be great for spreadsheets and emails, it’s not at all that good at processing sound. That’s why our engineers designed our award winning DacMagic XS to instantly upgrade the sound output from your laptop. Just plug it into the USB connection of your computer or Mac for incredible, detailed high resolution audio. Power AND Volume DacMagic XS delivers up to 10 times more power than most laptop soundcards. The headphone output from most laptops only outputs about 15-20mW, meaning weak bass and a lack of depth. The DacMagic XS however can output a massive 105mW for proper depth and volume that will drive the very best headphone set ups hard, with detailed sound and amazing bass. The volume available is easily adjusted on the simple ngertip controls and an LED shows the sample rate, so you always know you’re getting the right level of clarity and detail from your tracks. Highly Portable We know you won’t want to be without it, so we machined the DacMagic XS’s lightweight but hardwearing chassis from aluminium, for a total weight of just 100g. Pure Processing When running in USB Class 2 mode, the DacMagic XS can also use our dedicated Windows USB Class 2 USB driver (driver not required for Apple computers). This allows you to bypass the computer operating system’s poor audio path, preventing unwanted interference and re-sampling and guaranteeing professional quality audio output. You don’t need to put up with bad sound from a laptop, ever again.
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Teac Ud-H01 Desktop Headphone Amplifier & USB DAC - Black at 2830.00 HKD from TREOO.com
Teac Ud-H01 Desktop Headphone Amplifier & USB DAC - Black
HK$ 2,830.00
Stream Audio via USB from Your Windows or Mac PC at Better-Than-CD Quality. Streaming Digital Audio via USB Better-Than-CD Quality Playback The Ud-H01 digitally transfers audio source materials stored on a computer at up to 24bit/192kHz for streaming playback. The Ud-H01 supports USB asynchronous mode, using the precise internal clock to control timing and eliminating jitter issues. This allows optimal playback of high-resolution digital audio files from playlists/libraries on your iTunes, Windows Media Player or similar playback programs. 192kHz Up-Conversion to Reduce Jitter Even Further All digital input signals are converted to 192kHz via non-integral up-sampling, dramatically reducing jitter and allowing consistent D/A conversion based on the high-precision internal clock. Asrc conversion is used to produce a natural, 192kHz high-sampling rate digital audio signal. Dual-Monaural Configuration with Independent Left/Right D/A Converters The Ud-H01 incorporates two BurrBrown Pcm1795 D/A converters, one for each channel. The dual-monaural configuration eliminates interference between the channels for maximum performance from the D/A converters. A shunt-regulator circuit supplies the current to the D/A converters in order to eliminate ground noise generated by fluctuations in the supply voltage. Refined Analog Circuit Design for a Simple Signal Path The analog circuit design features a left/right symmetrical configuration to ensure signal paths of identical length for the left and right channels. The Ud-H01 incorporates a Muses 8920 FET input operational amplifier with outstanding I-V conversion performance for high-quality analog output, including headphones output. High-Performance Power Supply to Guarantee the Maximum Performance from all Components and Circuits The Ud-H01 uses a high-capacity toroidal-core power supply transformer capable of providing a stable current with high efficiency. This minimizes flux leakage and eliminates noise generated by electromagnetic induction. Ideal as a High-Quality Headphone Amplifier as well The same high-quality operational amplifier used for line output is used for headphone amplifier output. A dedicated high-quality aluminum knob controls headphone volumes. This allows users to enjoy a high-sampling-rated digital audio in spaces with neighbors close by, or other situations where speaker playback might disturb others. Input/Output Terminals for Incorporation into Full-Scale Hi-Fi Systems The Ud-H01 features coaxial and optical S/P DIF digital audio inputs and a USB port to allow use as a high-quality D/A converter. Output terminals include gold-plated RCA connectors, line-level output and XLR balanced output terminals for connection to a full-fledged high-end operation amplifier. The unit features a professional-style 3-pin power socket.
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Teac Ha-501 Desktop Headphone Amplifier - Silver at 5489.00 HKD from TREOO.com
Teac Ha-501 Desktop Headphone Amplifier - Silver
HK$ 5,489.00
Introduce yourself to TEAC’s Ha-501, a fully analog, dual monaural headphone amplifier with elegance. Part of the 501 series, this Class-A amplifier delivers superior sound quality, a sleek, modern look, all encased in a rugged but compact design. The Ha-501 supplies regular headphone listeners with quality sound, features and adaptable options that cannot be found in regular amplifiers. Pair it with your favorite headphones the same way you would a normal amp with favored speakers and take advantage of DC Servo Technology, Switchable damping Factors, High Output Power, a large Toroidal-Core Power Transformer and relax to your favorite music or radio broadcast. A headphone amplifier to achieve peak headphone performance In general, a headphone output from conventional hi-fi components does not allow even high-quality headphones to perform at their peak potential. The same way one chooses an amplifier to match with your favorite speakers, it is very impotant to chosse an appropriate headphone amplifier that matches your favorite headphones. A headphone amplifier is a "must-have" listening device for audiophiles. Active DC Servo Technology for decreased distortion, and discrete Class-A Amplifier In order to develop a first-class low distotion Class-A headphone amplifier, Teac held a series of sound evalutions during the development. These tests led to the careful choosing of parts and descrete circuit design. In addition, like most full-size hi-fi components, in order to eliminate Offset Electrical Potential, Active DC Servo Technology is utilized. Dual Monaural Design that eliminates interference between Left and Right channels In regards to the circuit design, each channel is completely designed on an individual basis to avoid signal interface to/from another. This contribution eliminates cross-talk, crucial headphone listening. Muses8920 Op-Amps - for high-end quality Muses8920 Op-Amp chip-sets are designed for high-end audio. Employed individually on the Left and Right channels, they help achieve superior sound. This Op-amp performs superb IV-conversion and is already very well regarded and used in a wide-range of hi-fi components. Large Toroidal-core Power Transformer An over-sized Toroidal-core power transformer is also employed to supply stable current to the every part of the circuit. Damping Factor Selector to optimize headphones' characteristic Each pair of headphones has its Damping Factor, a resisting force against non-intentional movement of the diaphram moving air forwards and backwords as sound. The value of the Damping Factor varies model by model, as diaphrams are made by different materials, in different shapes or different construction designs. Since headphones' diaphrams are activated by a very small current compared to conventional speakers, the damping factor increases, the sound is lean and crisp, and has a close relationship with headphones' impedance. Therefore, selecting the right Damping Factor is crucial in order for your headphones to perform at their peak potential. The Ha-501 provides 5 selectable Damping Factors, so users have the best suited signal for multiple headphones. Total 2,800mA of output power drives your high impedance headphones The Ha-501 schieves a remarkable 1,400mW output power per channel at 32 ohms impedance. The divice delivers not only enough power to drive standard headphones with an impedance range from 80 to 250 ohms, but also high-class 600 ohms hi-fi headphones. Robust Aluminum Body with a Classy Appearance Re-defining high class hi-fi components, the Ha-501 has a small footprint, classy appearance and is constructed with aluminum panels to create an authentic but modern looking hi-fi component. A robust metal construction helps eliminate vibrations that may affect the sound quality. The bottom and sidewalls are formed with a steel chassis, aluminum for the front panel and the rear panel out of steel. In order to ensure it's rugged design, each panel is connected with a beam that runs through the center of the unit. Normally, this type of construction is only for full-size components, particularly CD players that generate inherent motor vibrations. This construction ensures the Ha-501 is an authentic hi-fi component that will last you for many years. Choose between a handsome black version and a brilliant silver version to match with any interior or design. Well-designed User Interface Another remarkable feature of the Ha-501 is the user-friendly design. The firm-torqued volume control allows users to adjust the volume level with ease and precision while the toggle-type power switch assures On/off operation at a glance. Auto-muting function protects your ears from unexpected loud sounds when switching between headphones with different levels of impedance. Professional grade Input/Output connectors On the rear panel, a pair of Neutrik brand XLR input connectors allow users to connect high-end components or professional audio equipment, while wider-pitch RCA pin jacks allow user to connect large-shaft RCA pin cables from other markets. A detachale type 3-polar power inlet socket is also avalable. On the front, a 3.5mm stereo mini-jack allows users to connect a portable music player such as an iPod, conveniently. Switchable Output Mode for flexibility Line output level from the rear panel can be swiched amongst "Fixed Level", "Variable Level (coupled with volume)" and "Off".
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Icon Nuforce -2 Desktop Headphone Amplifier & USB DAC - Black at 3011.00 HKD from TREOO.com
Icon Nuforce -2 Desktop Headphone Amplifier & USB DAC - Black
HK$ 3,011.00
"The heart of your digital life" Operating from a technology platform that has won Nuforce numerous awards and rave reviews, Nuforce’s Second-Generation Icon is an audiophile-grade Integrated Desktop Amplifier featuring two 24-watt outputs for speakers, a 3.5-mm stereo input for connection to an iPod or other portable device, a USB DAC (24bit/96KHz high resolution) for converting digital music from the computer, and standard RCA inputs for employing the Icon as the heart of a conventional audio system. For the headphone enthusiast, the Icon also offers a high-performance headphone output. Of particular interest to the computer user, the Icon’s line-out functions as a PC or Mac USB-to-analog audio converter or can also be used as a connection to a subwoofer. Rj45 Pin Specifications Note: The Rj45 pin specification is provided for users who need to create a long speaker wire using standard ethernet cable. Users can also extend the length of the standard Icon-2 speaker cable using a Rj45 Coupler. Note: Icon-2 is not compatible with S-1 speakers.

Headphone Amplifiers Hong Kong

Amp up your Audio

Most mainstream headphones that are targeted towards the mainstream consumers come with many different sound qualities, and they often don’t require a lot of power to drive them. Just plug them into your computers or smartphones and you’ll be able to listen just fine. If you want to have some high-fidelity audio in your headphones however, they’re a whole different ballgame altogether.

High-end headphones are expensive, but they sound exceptionally good. While they delivery fantastic sound quality, expensive headphones tend to require a little bit more in terms of power; the typical computer and audio jacks on smartphones are usually not enough to power these headphones. That is where these headphone amplifiers come into play, giving these high-end headphones that much-required power boost.

The many different headphone amplifiers

Headphone amplifiers come in a variety of different shapes and sizes – as well as specifications and pricing. However, whenever people mention headphone amplifiers, it is commonly referring to portable amplifiers that can be taken around to be paired with digital audio players and smartphones. There are also desktop amplifiers that are made to power headphones at home, those are significantly larger and tend to require constant power supply rather than operate on a battery like most portable amplifiers do.

How to know if your headphones need an amplifier

There are several different ways to know if your headphones could do with the help of a headphone amplifier, and these are sometimes also conditional; some headphones may seem like they need an amp, but they don’t.

  • Your headphones sound quiet when plugged into your device, even at higher volumes.
  • Your headphones have a high impedance of 32 ohms or more.

Those two are the most common signs that your headphones could probably do with an amplifier. The issue with quiet headphones is more prevalent when it comes to mobile devices such as your music player or smartphone. The specifications of your headphone are also commonly listed on the back of the packaging where you will be able to see if it has a high impedance.

One thing to keep in mind that most in-ear headphones or earphones typically do not require the use of a headphone amplifier because they do not require much power. Most earphones are also optimized for use with mobile devices.

Great brands of headphone amplifiers in Hong Kong

Like the headphones themselves, there are many different brands of headphone amplifiers, as well as different price points depending on the specifications and components in the amplifiers. Here are some great brands of headphone amplifiers:

Fiio

Fiio is a rather famous headphone amplifier brand – largely because of their excellent value. Most Fiio products aren’t expensive, but they deliver fantastic performance in comparison to the other brands out there.

AudioQuest

AudioQuest is famous for its DragonFly DAC/AMP that plugs directly into the USB ports of your computers. The DragonFly DAC/AMP gives your headphones the much needed power and also delivers cleaner and more detailed sound thanks to the built-in DAC.

Sony

Sony themselves are one of the pioneers of high-fidelity audio to mainstream consumers. They have a large line of music players as well as headphone amplifiers that may be a little on the expensive side of things, but deliver on all fronts.

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