2x8W at 4 Ohm TPA3110 Class-D Audio Amplifier Board Only

Brand:| Model: AA-AB32231
This 2 x 8W Class D dual channel amplifier board employs a Tripath-style Texas Instruments TPA3110 chip. Each channel is rated at 8 watts, delivered with state-of-the-art sound quality.
  • Pre-assembled, pre-tested
  • Superb sound quality
  • Perfect Class-D architecture
  • Fully-bridged stereo output
  • Two channels—each up to 8W
  • Up to 92% efficiency
  • Does not require a heat sink for most applications
Part # 
Weight: 0.15 lbs.  
List Price$24.99
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Your Price
Buy 4-up$8.33
Part # 320-329
Qty:  EA
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Product Details

2x8W at 4 Ohm TPA3110 Class-D Audio Amplifier Board Only

Each channel of this Class D dual channel amplifier board is rated at 8 watts, delivered with state-of-the-art sound quality. The TPA3110's efficiency eliminates the need for an external heat sink when playing music under average listening conditions. Integration of high-quality SMD and MKP plug-in capacitors ensures hi-fi amplification output. Requires a DC power supply ranging from 10 to 16V (available separately) and performs admirably with 4 ohm and 8 ohm speakers.

Specifications: • Output power: 3W x 2 @ 8 ohms (<0.1% THD+N), 5W x 2 @ 8 ohms (<10% THD+N), 6W x 2 @ 4 ohms (<0.1% THD+N), 8W x 2 @ 4 ohms (<10.0% THD+N) • Frequency response: 20 Hz to 20 kHz (±3 dB) • Signal to noise ratio: 100 dB (A-weighted) • Recommended power supply: 10 to 16 VDC • Dimensions (mm): 98.48 L x 52.90 W x 16.10 H.

Product Specifications
  • Power Output (RMS Per Channel @ 8 ohms)3 Watts
  • Special FeaturesBoard Only Module
2x8W at 4 Ohm TPA3110 Class-D Audio Amplifier Board Only
  • BrandParts Express
  • ModelAA-AB32231
  • Part Number320-329
  • UPC844632098871
  • Product CategoryHome Audio Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (13 Reviews)
  • Weight0.15 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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2x8W at 4 Ohm TPA3110 Class-D Audio Amplifier Board Only
2x8W at 4 Ohm TPA3110 Class-D Audio Amplifier Board Only is rated 4.8462 out of 5 by 13.
Rated 5 out of 5 by from Wonderful little thingBought this little guy, because I wanted a TPA3116 but didnt want to wait for an order from China. And Im glad I did. I love this Amp. I currently have it installed with a rat shack pot in an old wooden .22lr ammo box. Using a pair of Boston HD5s, the sound is stellar.
Date published: 2014-05-02
Rated 5 out of 5 by from Very clean amplifierI bought this amplifier for a portable bluetooth music player. I bridged the amplifier to run 16 watts mono. I am powering a Tang Band W3-881SJF 3" Full Range Speaker and the outcome sounds fantastic. The battery life is also very impressive due to the efficiency of this amplifier.
Date published: 2014-03-25
Rated 4 out of 5 by from Nice Sound, Good PriceI bought this to give me a speaker output for my digital recorder that I use for music practice. It works just fine and has a clean sound through small bookshelf speakers. My only complaint is that it could have used two more screw terminals for the input connections.
Date published: 2014-02-26
Rated 4 out of 5 by from Pretty decent ampI've built a few versions of this, but I've managed to keep this one. It has Elna Silmic II caps, and an Alps blue velvet. I can't get enough of the smaller power chip amps. There a lot of fun.
Date published: 2014-02-12
Rated 5 out of 5 by from Great Amp!Audiophile quality sound for cheap. With a few mods this little amp is amazing! Don't let the low power fool you. It will drive fairly efficient speakers easily. Especially good for computer sound systems.
Date published: 2014-01-30
Rated 5 out of 5 by from Works amazingly well - I now own 30 of theseI purchased one of these to test alongside two other amps here on Parts Express, one of another style and the higher powered version of this amp by the same manufacturer. This amp was much better than the other brand amp, a big difference in fact. The higher powered version of this amp worked fine but really in my uses was too much power and I preferred the audio connection to be a headphone jack as this one used over the others RCA input.In the end I purchased 30 more of this amp to replace an one year old analog amp that was installed in kiosks. They are powering a 2" speaker, and on the computer that this is connected the volume is set between 5 and 10% and is more than enough for the kiosk to be super loud (able to hear clearly 5-6 feet away outdoors in open air) and completely distortion free. I am very, very impressed with this amp so far. I've owned these for three months now and have had no issues. I purchased a few extra to have a spares in case one failed but so far they have all worked perfectly. I can't ask for more than what these have provided so far anyway, recommended!
Date published: 2014-01-22

Product Q&A

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who own this product or have experience with it.
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please email tech@parts-expresss.com  for a prompt reply.
2x8W at 4 Ohm TPA3110 Class-D Audio Amplifier Board Only

Which potentiometer would be adequate for this board? I see several on you site but not sure which one would be best? 5k, 10k, etc..? https://www.parts-express.com/Search.aspx?keyword=potentiometer%20stereo&sitesearch=true

Asked by: graciaj
found the answer, 50k per the manual.
Answered by: graciaj
Date published: 2014-07-02

Is there a 3.5mm jack there?

Asked by: powpowkick
Yes this has a 3.5mm jack for an input.
Answered by: MattP
Date published: 2014-01-28


will this power supply give me MAX output.now i know this is the ideal power supply for the lepai 2020A+ but im not sure about this
Asked by: speaker freack
Yes that power supply will be ideal for that amplifier.
Answered by: MattP
Date published: 2014-01-27

Popping sound when powered on?

I built a little power amp with this board. I turn it on by plugging in the power supply (poor man's on/off switch). When it powers on, a "pop" comes out of the speakers. Does anyone experience this, and if so, what's the best way to remedy it?
Asked by: MattG
that "pop" sound is simply the caps filling up with power, no need to worry
Answered by: speaker freack
Date published: 2013-09-07

Would I need volume control with a bluetooth module?

I was thinking of using the BT-1A for input. Would I need a potentiometer for volume control or would the volume on the source device be sufficient?
Asked by: Betts
This depends on your source device. If you can control the volume through bluetooth, then yes it will be sufficient
Answered by: JDoyner
Date published: 2013-07-26

Significant hum

I purchased this board on Amazon and have been very happy with it, but I do have a slight complaint that I think can be worked out with a little help. I am an audio novice so I don't know a whole lot about fixing these issues.I set up this amp with two HiWave BMR12 speakers in parallel on each channel powered by a 12v 1a wall wart power supply. When I plug in the power it creates a low volume hum. Plugging a 3.5mm stereo cord increases the hum greatly, and the act of plugging it in (on either end) creates a lot of crackling. Adding a wire to the ground terminal and hooking it to a metal object reduces the initial hum, but does not help with the later hum.Interestingly, my computer creates a loud hum when plugged in, but my ipod actually reduces the hum. My computer does not create a hum on any other set of speakers.Does anyone have a suggestion on how to reduce the humming both before and after the 3.5mm cable is plugged in? Research tells me it might be a ground loop but I don't know how to fix it.
Asked by: Jay M.
Your hum could be a couple of things. Ground loop is a possibility, but the 12v 1a wall wart suggest you have noise on your power input.Assuming you have a low cost wall wart, it is most likely unregulated. An unregulated supply should never be used for audio. Not only is there a noisy power input, but the voltage coming from the power supply can be much greater than 12 volts. Search for "unregulated power supply tutorial fun spark" to find out why. To fix it, a simple 12v ic linear regulator after the wall wart with some caps should dramatically improve your amps performance.However before you go buying some more parts, try checking to see if this is the problem. You will have to find a 12v regulated supply or even a 12v battery set up (12V SLA or 12V NiMN pack or even 8 AA in series[they probably wont last long but for testing it should work]). If the noise is still there, then I would try ground loop isolator.Best of luck.
Answered by: JDoyner
Date published: 2013-07-03

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