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21 products found
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Waterproof Motorcycle Handlebar Audio Amplifier System 3" Stereo Speaker FM MP3 USB SD AUX With remote control and alarm function
HK$ 246.00
Tomtop
Features: If you do not want to miss the retransmission by an sports event, a special flash information , this radio and its enclosures especially designed for the motor bikes are the accessory which you seek. Features: Connection listen to music, support Usb/sd/tf/fm/am, Support the AUX audio input, Plug and play With remote control and alarm function Function clock, The radio collects the bands FM ,With functions of Fm/am Adapt to any motor bike or electric bicycle Atv, Equipped with two 3 Stereo Speaker Solid case waterproof and its robust fasteners, the enclosures will constitute an addition of choice to your motor bike, while the radio will collect the bands FM and the fasteners handlebar will make it practical and simple to use. Related parameters:
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NiZHi Bluetooth Speaker Micro Sd/tf Card USB Disk Music Player Mp3/4 Audio Amplifier FM Radio
HK$ 154.00
Tomtop
Features: Supports micro SD / TF card, USB flash disk, FM Radio, Bluetooth hands-free call function, etc. HiFi clear loud sound output with earphone output port. Universal for all Bluetooth-enabled devices such as, for iPhone iPad Samsung galaxy S4 / S3 / Note 2, other Android smartphones, tablet PCs, etc. Also supports Line IN function, receiving audio source from Mp3, Mp4, tablet PC, Notebook, for iPod, for iPhone, etc. Built-in MIC enables you to make a handsfree call, let you stay away from radiation. Build-in high sensitivity FM radio frequency module, the signal is excellent. Powered by built-in high capacity rechargeable battery, support long time music playing. Compact and portable design, perfect for both home use and travel use.
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−33%
TDA2030A Power Audio Amplifier Amp board DIY kit 18Wx2
HK$ 157.00 HK$ 235.00
Mini In The Box
For:Electronics Components; Net Dimensions(cm):11.76.03.7; Shipping Weight(kg):0.096; Net Weight(kg):0.097; Listing Date:01/05/2013
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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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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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60W 12V Hi-Fi Digital Stereo Audio Amplifier Volume Control Board
HK$ 75.00
Banggood
60W 12V Hi-Fi Digital Stereo Audio Amplifier Volume Control Board Feature: Weight: 154g PCB size: 9cm x 13cm Input sensitivity: AT1KHz Max output power: Stereo 60W Supply input: DC 12V-15V (min 3A) Package included: 1 x Audio Power Amplifier
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−33%
386 Mini Audio Amplifier Module - Light Blue (5~12V)
HK$ 32.00 HK$ 47.00
Mini In The Box
Type:Accessories; Accessories Function:Power; For:For BeagleBone; Listing Date:11/06/2014
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−33%
Mini Digital Audio Amplifier 10W10W / 2 Channel AMP/ DIY Module Class D HIFI 2.0 (DC12V)
HK$ 47.00 HK$ 71.00
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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−19%
High-Power Audio Amplifier Construction Manual
HK$ 369.00 HK$ 462.00
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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−40%
LM386 Chip 20 Gain Audio Amplifier Module – Blue
HK$ 24.00 HK$ 39.00
Mini In The Box
Model:LDTR-222010; Type:Sensor; Sensor Function:Sound; Listing Date:09/14/2015
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−34%
TDA2030A 2.1 Stereo Amp 3 Channel Subwoofer Audio Amplifier Circuit Board
HK$ 118.00 HK$ 180.00
Mini In The Box
Model:TDA2030A; Cable Length(cm):30; For:Electronics Components; 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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−36%
FM-103 Car Stereo Audio Amplifier with FM Function-Black
HK$ 114.00 HK$ 180.00
Mini In The Box
Support Format:MP3; Full FM Frequency (MHz):87.5~108.00 MHz; Power:DC 12V; Max. Input Power:200; Net Dimensions(cm):14.013.04.0; Shipping Weight(kg):0.33; Net Weight(kg):0.284; Listing Date:11/07/2014
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−40%
New Lm386 Audio Amplifier Module Lm386
HK$ 24.00 HK$ 39.00
Mini In The Box
Operation Voltage(V):5-12; Output Voltage (V):5-12; For:Integrated Circuit Modules; Net Dimensions(cm):4.01.31.2; Shipping Weight(kg):0.006; Net Weight(kg):0.009; Listing Date:01/10/2014
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2x100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V-24V For Arduino
HK$ 85.00
Banggood
2x100W Tpa3116 D2 Dual Channel Digital Audio Amplifier Board 12V-24V For Arduino Use two new import Tpa3116 amplifier chip, combined with nanotechnology in the field of digital zoom ahead, with advantages of clear sound quality, strong zoom capability, high efficiency, response parsing density . In the mature markets is a high-end amplifier board.This edition is finished plate, it can be used immediately. Connectting the power and sound you can experience digital music that can bring new experience. Condition: A new brand,unused,undamaged item in its original packaging (where packaging is applicable). MPN:Does not apply EAN:Does not apply Main Parameters: Product Name: Digital Audio Amplifier Product Number: Xh-M190 Chip Selection: Tpa3116 Input Power: Dc12-24V Output Power: 2 x 100W Input Impedance: 4-8Ω Frequency range: 14-100Kz Letter Noise: 100db Output Channel: 2 (Left + Right Channel) Dimensions: 105 x 65 x 23mm Fit for: Tv,dvd,usb Speaker,Portable Speaker,Satellite Finder, Navigator Package Included: 1 x 2*100W Tpa3116 D2 Dual Channel Digital Audio Amplifier Board 12V-24V for Arduino
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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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−9%
High-Power Audio Amplifier Construction Manual
HK$ 360.00 HK$ 399.00
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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−13%
TDA2030 Audio Amplifier Module
HK$ 55.00 HK$ 63.00
Mini In The Box
Development Board Type:For Arduino; Module Function:Board; Sensor Function:Motion; Accessories Function:Power; For:For Arduino; Listing Date:09/26/2017
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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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TDA8950 2x170W Digital Subwoofer Class D Audio Amplifier Board AMP Module
HK$ 184.00
Banggood
Features: This version can choose differential input, the effect is more good, need is equilibrium output level before to pick up. The board with rectifier filter circuit, save yourself the trouble collocation rectifier filter, using 30 a new original rectifier bridge with South Korea. Sanhe high-speed electrolytic arrays, the effect is very good. Bring their own trumpet protection circuit, installed substitution of DIY is more convenient. Can be convenient for BTL output, need very strong beginning ability, if you don't have a real master, please don't try this kind of connection. Reserve a plus or minus 15 v voltage potential position on board, convenient DIY ability strong buyers with myself, can give the front-end power supply. Adopts SMT process, more stable than hand soldering product. Match: the amplifier board can be used directly as pure power amplifier You just need to plug in transformer, also can be used with tones ,or made subwoofer amplifier with low pass board, price is very high. Specifications: Name: Tda8950 Amplifier Board Size:10 x 10 (cm) (Excluding potentiometer handle and other bulge) Work: Class D Efficiency: 90% Rated output power: 2 x 170W Operating voltage: Ac16-28V Maximum output: OCL = 170Wx2 BTL = 300Wx1 Package includes: 1 x Tda8950 Amplifier Board 1 x 3Pin Line
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−40%
Mini Digital Audio Amplifier Board - Green
HK$ 24.00 HK$ 39.00
Mini In The Box
Model:DH-1001; Type:Sensor; Sensor Function:Sound; Brand:landa tianrui; Listing Date:12/16/2014
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*Prices updated on 16 Oct 2017

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.

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