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21 products found
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TDA2030A 2.1 Stereo Amp 3 Channel Subwoofer Audio Amplifier Circuit Board
HK$ 79.00
Mini In The Box

Model:TDA2030A; Cable Length(cm):30; Net Dimensions(cm):14.57.85.5; Shipping Weight(kg):0.157; Net Weight(kg):0.157; Listing Date:10/10/2013

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Yaqin Yaqin Ms-23B Tube Phono Preamplifier Stage MM Riaa Phonograph Pre-amp Stereo HiFi Audio Amplifier Amp
HK$ 1,411.00
Tomtop

Features: Tube pre-amplifier designed for vinyl disk phonograph(RIAA). Adopts feedback equalizer and frequency response is in conformity to Riaa standard. Two 12Ax7 tube with DC power supply filaments for optimal hum and noise reduction. Durable aluminum alloy housing with tube protective casing and steel heavy duty chassis. Power transformer with 0.35mm stalloy shell and high-strength OFC enamelled wire. With RCA input output jacks and GND interface.

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El84 Preamp Electron Vacuum Tube 9-pin for 6P14 El84/6Bq5 Audio Amplifier Tube Replacement
HK$ 157.00
Tomtop

Features: El84 vacuum tube. Replacement for El84/6Bq5. 9-pin, high transconductance. HiFi and soft sound, low noise. High reliability and stability.

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Lm386 Chip 200 Gain Audio Amplifier Module - Blue for Arduino DIY
HK$ 18.00
Tomtop

Features: Onboard Lm386 chip. 200 Gain of circuit design. Onboard speaker terminal blocks. Onboard 10K adjustable resistance, you can adjust the volume of amplification. Chips are pin has been drawn, you can directly input audio signal.

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Mini Digital Audio Amplifier 10W10W / 2 Channel AMP/ DIY Module Class D HIFI 2.0 (DC12V)
HK$ 47.00
Mini In The Box

Type:Accessories; Accessories Function:Power; Net Dimensions(cm):4.04.01.8; Shipping Weight(kg):0.024; Net Weight(kg):0.021; Listing Date:07/25/2014

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386 Mini Audio Amplifier Module For Arduino- Light Blue (5~12V)
HK$ 24.00
Mini In The Box

Type:Accessories; Accessories Function:Power; Listing Date:11/06/2014

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Lm386 Audio Amplifier Module 200 Times 5V-12V Input 10K Adjustable Resistance Drop
HK$ 24.00
Mini In The Box

Model:LDTR-222010; Type:Sensor; Sensor Function:Sound; Listing Date:09/14/2015

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Tpa3110 2*15W Digital Stereo Wireless Bluetooth Audio Amplifier Power Amp Board
HK$ 73.00
Tomtop

Features: Sound quality is very good by using this module. Bluetooth wireless audio input and the max. receiving distance is 10m. Power output: Two Channel 15W + 15W. Applicable speaker impedance: 4/6/8/10 ohm.

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M145 Original High Resolution Yamaha Digital Amplifier D Audio Amplifier DC12V
HK$ 55.00 HK$ 66.00
Mini In The Box

Type:Other Module; Power Supply:Other; Development Board Type:For Arduino; Module Function:Board; Sensor Function:Accelerometer; Listing Date:01/26/2018; Production mode:Self-produce

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5654 6J1 Preamp Electron Vacuum Tube 7-pin for Ef95 6Ak5 5654 6J1 403A Audio Amplifier Tube Replacement
HK$ 24.00
Tomtop

Features: 5654 6J1 vacuum tube, 7-pin. Only for Ef95, 6Ak5, 5654, 6J1, 403A amplifier vacuum tube replacement. High reliability and stability. HiFi and soft sound, low noise.

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El84 Preamp Electron Vacuum Tube 9-pin for 6P14 El84/6Bq5 Audio Amplifier Tube Replacement
HK$ 94.00
Tomtop

Features: El84 vacuum tube. Replacement for El84/6Bq5. 9-pin, high transconductance. HiFi and soft sound, low noise. High reliability and stability.

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5670 6N3 Preamp Electron Vacuum Tube 9-pin for 6N3P 2c51 5670 396A Audio Amplifier Tube Replacement
HK$ 47.00
Tomtop

Features: 5670 6N3 vacuum tube, 9-pin. For 6N3P, 2c51, 5670, 396A amplifier vacuum tube replacement. High performance, soft sound, ultra-low noise. Perfectly work as a head in gain amplifier.

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5670 6N3 Preamp Electron Vacuum Tube 9-pin for 6N3P 2c51 5670 396A Audio Amplifier Tube Replacement
HK$ 79.00
Tomtop

Features: 5670 6N3 vacuum tube, 9-pin. For 6N3P, 2c51, 5670, 396A amplifier vacuum tube replacement. High performance, soft sound, ultra-low noise. Perfectly work as a head in gain amplifier.

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Kt88 6P3P Preamp Electron Vacuum Tube 6-pin for Kt88 Gekt88 Kt88-98 Kt100 Cv5220 6550A-98 Audio Amplifier Tube Replacement
HK$ 110.00
Tomtop

Features: Kt88 6P3P cathode-ray tetreode vacuum tube, 6-pin. For Kt88 Gekt88 Kt88-98 Kt100 Cv5220 6550A-98 vacuum tube replacement. Mainly applied for high frequency power machine, plate dissipation: Kt88 Gekt88 to 40W, Kt88-98、kt100、cv5220、6550A-98 up to 45W. High performance, strong power, wide sound range, low noise. Ideal for ultra-linear amplifier circuit.

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Irs2092S Mono-Channel Digital Audio Amplifier Class D Hifi High Power Amp Board 500W
HK$ 180.00
Tomtop

Features: High output power digital amplifier, mono channel. Great sound quality: use professional amplifier chip and audio components, less distortion. Easy heat dissipation: with a fan and a radiator for heat dissipation at the same time. Stable and reliable performance: with high frequency and low resistance capacitance, more reliable operation. Compact size, easy to install. Note: 1. This is a pure power amplifier board, the sensitivity of the input signal is 1.5V rms, if your input signal voltage can't reach this value, it is recommend to add preamp. 2. Rated supply voltage is 65V, range from 58 to 70V, do not over 70V! Positive and negative should be correct. 3. Recommended power supply is 65V. 4. Recommended 4-8Ω / 10-18inch speaker. 5. Carefully check and ensure the wiring is correct before power connection.

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Multi-functional Phone Holder Bluetooth Handsfree FM Transmitter Stand Car Kit MP3 Audio Amplifier 360 Degree Rotation Mounting B
HK$ 110.00
Tomtop

Features: Universal and suitable for all kinds of mobile phones, Ipad, game players, GPS and other portable mobile devices. Suitable for home, office and in-car use. Support handsfree answer, hang up, reject and redial. Convenient for phone navigation, video playing and car DVR shooting. Transmit music from cell phone to car audio wirelessly. Support speaker and FM transmitter two modes and switch them with one button. Use digital tube to display FM transmit frequency. Automatic power-saving mode and auto power-off memory function. Stable sucker clip structure; suitable for smart phone with 10cm widthor below screen.

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High-Power Audio Amplifier Construction Manual
HK$ 358.00 HK$ 397.00
Kobo

Design and build awesome audio amps. Amateur and professional audiophiles alike can now design and construct superior quality amplifiers at a fraction of comparable retail prices with step-by-step instruction from the High-Power audio Amplifier Construction Manual. Randy Slone, professional audio writer and electronics supply marketer, delivers the nuts-and-bolts know-how you need to optimize performance for any audio system-from home entertainment to musical instrument to sound stage. Build a few simple projects or delve into the physics of audio amplifier operation and design. This easy to understand guide walks you through: Building the optimum audio power supply; Audio amplifier power supplies and construction: Amplifier and loudspeaker protection methods; Stability, distortion, and performance; Audio amplifier cookbook designs; Construction techniques; Diagnostic equipment and testing procedures; Output stage configurations, classes, and device types; Crossover distortion physics; Mirror-image input stage topologies.

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Mini Digital Audio Amplifier Board - Green
HK$ 24.00
Mini In The Box

Model:DH-1001; Type:Sensor; Sensor Function:Sound; Brand:landa tianrui; Listing Date:12/16/2014

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−19%
High-Power Audio Amplifier Construction Manual
HK$ 367.00 HK$ 459.00
Kobo

Design and build awesome audio amps. Amateur and professional audiophiles alike can now design and construct superior quality amplifiers at a fraction of comparable retail prices with step-by-step instruction from the High-Power audio Amplifier Construction Manual. Randy Slone, professional audio writer and electronics supply marketer, delivers the nuts-and-bolts know-how you need to optimize performance for any audio system-from home entertainment to musical instrument to sound stage. Build a few simple projects or delve into the physics of audio amplifier operation and design. This easy to understand guide walks you through: Building the optimum audio power supply; Audio amplifier power supplies and construction: Amplifier and loudspeaker protection methods; Stability, distortion, and performance; Audio amplifier cookbook designs; Construction techniques; Diagnostic equipment and testing procedures; Output stage configurations, classes, and device types; Crossover distortion physics; Mirror-image input stage topologies.

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TDA2030 Audio Amplifier Module
HK$ 24.00
Mini In The Box

Development Board Type:For Arduino; Module Function:Board; Sensor Function:Motion; Accessories Function:Power; Compatibility:For Arduino; Listing Date:09/26/2017

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5654 6J1 Preamp Electron Vacuum Tube 7-pin for Ef95 6Ak5 5654 6J1 403A Audio Amplifier Tube Replacement
HK$ 40.00
Tomtop

Features: 5654 6J1 vacuum tube, 7-pin. Only for Ef95, 6Ak5, 5654, 6J1, 403A amplifier vacuum tube replacement. High reliability and stability. HiFi and soft sound, low noise.

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Audio, Speaker, and Headphone Amplifiers Hong Kong

To truly appreciate and understand a great pair of hi-fi speakers or headphones require the user to have more than just the speakers or headphones themselves. Aside from having a keen sense of sound, the listener would also need to have the proper equipment to power the speakers or headphones. This is because these higher end high fidelity speakers and headphones typically have a higher power requirement compared to lower end headphones or headphones that are mainly targeted towards the average consumer.

A Power Boost to your Audio

Audio amplifiers function as their name suggests: they amplify power. These devices channel more power through to your headphones or speakers, filling up the gaps in power where your source – where the sound comes from, usually your computer or TV – is unable to deliver enough power to your equipment. When there is not enough power to power a pair of headphones or speakers, the sound comes out soft and difficult to hear; it can also affect the sound of your equipment as it is unable to bring out the full potential of your headphones or speakers.

There are several easy ways to roughly tell if your speaker or headphones require an amplifier. On the packaging of headphones, you will see a term ‘Impedance’ on the specification list. A common headphone will have a very low impedance ranging from 8 to 16 ohms, which can be powered by your computer and smartphones easily, but typically anything more than that could do with a little help from an amplifier.

Speaker Amplifiers Hong Kong

Most common everyday speakers, especially those meant for computers, are called ‘active speakers’; this means that the speakers come with a built-in amplifier. For those that require an external amplifier are called passive speakers, and are usually much better in sound. Speaker amplifiers such as those from Yamaha or Denon usually take up a little bit more space because it is usually made to power very large passive speakers at home. Pairing the right speakers with the right amplifiers can properly unlock the full potential of your speakers for maximum enjoyment.

Headphone Amplifiers Hong Kong

Headphone amplifiers generally have two different uses: those set at home for listening on much higher-end headphones, and the portable ones for the headphone listeners on the road. Home headphone amplifiers from makers such as Sony are similar to the speaker amplifiers, being large and requiring a direct-current power.

Portable Amplifiers Hong Kong

Portable ones come in various sizes, from being as small as an iPod Nano to a larger size as that of a smartphone – Fiio, in particular, is a brand that makes a number of these. Portable amplifiers are powered by a battery and is commonly attached to digital music players or smartphones to provide an additional boost in power for listening to music on the go.