PAM8403 Mini 5V Digital Amplifier Board with Switch Potentiometer can be USB Powered
PAM8403 5V 2-Channel USB Power Audio Amplifier Board 3W*2 Volume
Operating voltage: 2.5 V to 2.5 V
Maximum output: 3 wx2 (5 v 4 o)
Board size: about 22 mm 30 mm wide/deep/high 16 mm excluding potentiometer handle bulge (dimension) boards are finished plate welding test, the above potentiometer is with switch, can control the volume and power switch, not more than 5.5 V, working voltage power supply positive and negative don’t wrong, otherwise the chip has the potential to damage.