PAM8403 Digital Amplifier Board 4 Channels Mini Amplifiers USB 5V Power Supply Amplificador DIY 4x3W for Dual Audio Input

Features: Product Name: Two-channel digital amplifier Input voltage: DC 5V Audio input: support for dual audio input Number of channels: 4 channels Output power: 3W*4 Size: 46*29*13mm Instructions: Switch ON When two audio switches switch to ON,At this time, the power amplifier board supports single audio input.Simultaneous output of four channels Switch to play 12 When two audio switches switch to 12,At this time, the power amplifier board supports dual audio input.The output form is a Corresponding output.As shown in the wiring diagram: audio input corresponds to audio output left channel and right channel audio input corresponds to audio output left channel and right channel Note: When switching from dual audio to single audio, You need to unplug a set of audio before switching the switch.otherwise it may appear, music is confusing, harsh, and may cause electric current to reverse, damage your audio equipment, This amplifier does not support audio switch One up/one down mode Package Included: 1 x PAM8403 Digital Amplifier Board 4 Channels Mini Amplifiers