HUAZHU DC12V 24V 2 1 Channel TPA3116 Subwoofer Amplifier Board High Power Bluetooth Audio Amplifier Board 50W 50W 100W Bluetooth Amp Bluetooth Amp

Can choose different sounds according to individual prefer, only effect on bass of the left and right channel. Pull switch inward, increase the left and right channel bass to full frequency output. If the bass volume is very loud, it may not be obvious effect. Because the bass channel output has included these bass,and the bass volume is much louder than the volume of the left and right channels. Note: Default bluetooth mode after power is connected If you want Aux input,pls disconnected the bluetooth,press the switch change to audio input mode. Turn the volume potentiometer to the left to decrease the volume, turn to the right to increase the volume, press the function switch. Instructions for function switch: 1. Plug in the power and turn on the default Bluetooth mode 2. When the Bluetooth is disconnected, press the switch to switch the audio input mode 3. Bluetooth playback status, short press the switch to pause/play