2 Channel 3W PAM8403 Stereo Audio Digital Amplifier Board With USB<br>Feature:<br>Max output: 3W x 2 (5V 4&amp;Omega;)Flexible assembly usage.PAM8403 Mini Power D-Class Amplifier Board.Operating voltage: DC 3-5.5V (with USB Power Cable)Potentiometer with switch， can Adjust the volume and Control the power switch<br>Package included:<br>1 x Audio Digital Amplifier Board