Description:

1.XH-A157 digital power amplifier board, the input voltage is DC5V, supports dual audio input, can play two sets of music at the same time, can also input a set of audio, four channels are output at the same time, the onboard audio switch switch can freely switch dual audio The channel is still four-channel output.

2.Note that when switching from dual audio to single audio input, you need to unplug a set of audio before turning on the switch, otherwise it may appear that the music is confused, harsh and unpleasant, or it may cause electrical reverse flow and damage your audio source equipment.