ZK-MT21 2.1Channel Bluetooth Audio Power Amplifier Board Subwoofer 50W+50W+100W

ZK-3002 Digital Power Amplifier Board TPA3255 Stereo Dual 300WX2 /Mono 600W

Bluetooth Power Amplifier Board with Subwoofer Audio Power Amplifier Module

Blue-tooth 5.0 Audio Amplifier Board 400W Subwoofer Dual Microphone AMP Module

TPA3223 TPA3255 Digital Amplifier Board Bluetooth HIFI Power Amplifier Module

200W Bluetooth Amplifier DIY MP3 WAV Decoder Board - Wireless 12V Power

ZK-AS21 TPA3255 2.1Ch Audio Power Subwoofer Amplifier Board 300W*2+600W BT AUX

bluetooth Audio Power Amplifier Board 120W Subwoofer Dual Mic Module for Speaker