This is PAM8403 Mini 5V Digital Amplifier Board With Switch Potentiometer. PAM8403 is a small digital amplifier chip, high-definition sound quality highlights the advantages of digital chips, the circuit using the most reasonable peripheral configuration.

Features:

• Operating voltage: 2.5V-5.5V
• Maximum output power: 3W x 2
• Built with switch Potentiometer, can adjust the volume & control power switch freely!
• Flexible assembly usage.