Review on DAMGOO Bluetooth 50W+50W Stereo Audio Amplifier Board: Wireless DIY Speakers with Treble and Bass Control, BT 5.0, AUX Inputs - Easy Installation, Password Free by Lori Coleman

Amplifier small and light, did not get very hot when I used it, has two impedance values, compatible with 4 ohms and 8 ohms, one channel i with 150w woofer at 4 ohms, despite the fact that this amp only puts out 50 watts at this impedance, the sound quality hasn't suffered much. I used channel 2 to daisy chain two small 4 ohm speakers and they sound great. All in all I think I pushed this amp to its limits, everything seemed great up to that point for a couple of weeks. If you're looking for something small and light with very fast Bluetooth connectivity, this is a good buy for the price. The knobs are cheap and don't fit well even if you take the time to try, but these amps are usually hidden, the assembly is only shown in the picture, but it was still very easy to figure out.