1. Mini PAM8403 2x3W Stereo Audio Power Amplifier Board 2. PAM8403 2x3W Stereo Audio Power Amplifier Board + Volume Control Potentiometer
• Maximum output power: 2x3W (5V 4Ω) • Operating voltage: 2.5 V to 5 V • The left and right channel output of "negative" cannot be connected together, otherwise it will burn the IC.