Use TPA3255 Chip, digital audio amplifier BTL bridge power output 300W x 2 channel design, THD less than 0.008% when working continuously
Please pay attention!
Q: Why the amplifier distortion when raising volume ?
A: Under normal circumstances, distortion is caused by the mismatch between the power of the amplifier and the speaker. Therefore, it can be reasonably matched according to the ratio of 1.2-1.5 to 1 between the power amplifier and the speaker
Q: How to match the amplifier and speakers reasonably?
A: The best match is 1.2-1.5:1 (that is, the speaker power is 50W, then the power amplifier power is 60W-75W)
Q: The power amplifier is connected correctly, why is there noise such as electric current?
A: please check whether there is current sound when no load, and whether there is no current sound when no load, please replace the audio input wire and input device. If there is current noise at no load, you can replace the power supply to test again
At the same time, confirm that the surrounding current signals will not cause interference to the equipment
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HiFi integrated class D amplifier
300W+300W Dual Channel audio amplifier ,Mini Power Amp, More powerful, Sound great
Build quality is surprisingly solid,Nice touch
The dual 300W shocking bass output is compatible with passive stereo speakers of most sizes and impedance specifications
Two input ways:3.5mm AUX Audio input/ RCA Audio input
1 PC * 300W+300W 2.0 Channel Stereo Power Amplifier
This is my first foray into inexpensive class D amplifiers. My last full range class D experience was with a more expensive amp (about 10x the price of this one) about 15 years ago, and it kept me away from Class D until now. This has none of the drawbacks of my previous attempt. I don't yet know what the long-term durability will be, but this amp is silent w/ no input and seems to reproduce my music as I would expect. I don't notice any deficiencies in sound quality compared to my much more expensive AB amps. It drives my low impedance speakers without any issues at normal volume levels. My amp did come with a power supply - 32VDC, 5 Amps. That's not enough for this amp to reach peak output, but it is probably a good SQ/POWER compromise. For the price, I would not hesitate to recommend this amp. Unless you have exceptionally revealing speakers, this amp is probably sufficient for most people and most use cases. I suspect speaker and room interaction will cause many more issues than the SQ of this amp. If everything else in your system is perfect, you are probably not looking at <$100 amplifiers. My only real concern is longevity and if it fails, will it damage my speakers.
I bought this amp based on measurements and feedback from Audio Science Review forum.
I have a couple class D amps, which usually have built-in DACs, which renders external DACs useless. Since this amp has no DAC reprocessing the signal, I can use my Topping E30 DAC and get the full quality output.
My subjective impression is the amp sounds very clean and powerful for such a small amp. I don't think you can go wrong here.
My one complaint is kind of a pain: the outputs are reversed. Left is right and right is left, so now my speaker wires are crisscrossing to compensate. Good thing they were long enough to reach!
Great sound, compact and powerful. Update, decided to use the second amp to drive Magnepan MMGs and to my surprise they are a very nice fit. Musical and more than enough power. Using an old Yamaha integrated as a preamp to the A07. I put together a power supply from parts here and set it to 44 VDC output. This seems to be more than enough to drive the MMGs with a sealed subwoofer handling everything from 50 Hz and below. This is a great find for me.
Wanted to replace old Pioneer receiver I had running my N38s on my pc. No distortion for at max volume on amp and pc for a few rap songs. Felt very little heat around the back. Nothing to worry about. Will be looking for a good EQ to pair with it. Mine came with a power supply rated 32v 5A. Not currently tested. Very happy with this little amp.
Looks and feels nice, plenty of power, but sound quality is lacking on full range speakers.
Have a couple mono versions of the TI TPA2355 amp and was happy to see a stereo version available. Found a 48V 3a supply to feed it and very pleased with the results, will likely purchase again for other projects.