PAM8403 Mini 5V digital small power amplifier board with switching potentiometer can USB power sound good

Description

PAM8403 is a small digital power amplifier chip. The high-definition sound quality highlights the advantages of the digital chip. The circuit adopts reasonable peripheral configuration. The power supply filter is upgraded to 470uf, 1.6mm glass fiber sheet, and the output 3W+3W high-fidelity sound quality. The potentiometer adopts the original anti-meter body and electric potential. The device with a switch can directly cut off the power supply counterclockwise.