Review on 🔊 DAMGOO 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board with Treble and Bass Control, Dual TPA3116 Chip, 12-24V DC Input, Bluetooth and AUX Inputs, DIY Wireless Speakers AMP Board, Password-Free by Crystal Harrison

Wow this cheap little one delivers great sound quality. Hooked up to a pair of Cerwin Vega crossover components and a great value 8" woofer which you can find here at Revain. I'm sure it will sound much better with real speaker settings. The power supply is 24v, 6amp, but I think you would be happy with the 12v, 6amp power supply as well. However, Bluetooth doesn't seem to be that impressive. If I move about 15 feet away from the walls it starts to collapse. All my other legitimate bluetooth devices work much further.