Compact Bluetooth 2.1 Channel Amplifier with Treble & Bass Control - 100W Output

ZKMT21 Bluetooth Amplifier Board 2.1 Channel Subwoofer Amp 50W+50W+100W Control

Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 50W x 2+100W DC 12...

ZK- MT21 Bluetooth Amplifier Board 50W+50W+100W with Treble and Bass Control

Bluetooth 5.1 Audio Stereo Amplifier Board,200W HiFi 2.1 Channel Mini Subwoof...

ZK-MT21 Bluetooth Amplifier Board,50W+50W+100W 2.1 Channel Subwoofer Amp Board w

High-Performance 2.1 Channel Bluetooth Amplifier with AUX Input - 100W Power

HiFi 2.1 Channel Power Player Sound Amplifier Bluetooth 5.0 Digital Bass Amp