DROK Mini 5V Audio Ampli Digital Amplifier Board Support USB Powered Two Channel Stereo Amp 3W+3W
Feature:PAM8403 Mini Power Amplifier Board.Dimension:30 x 22 x 16mm (do not including potentiometer handle)Operating voltage: DC 2.5-5.5VMax output: 3Wx2 (5V 4Ω)Efficiency: 90% Package Includes:1x Mini Amplifier