Product DescriptionPAM8403 Mini Digital Power Amplifier Board Class D 2*3W 2.5-5V input Feature: Model: PAM8403 Super Mini: 1.85*2.15cm Input voltage: 2.5-5V (can't be more than 5.5V, otherwise it will burn the ICs on board) It could work with 4 Ohm and 8 ohm Speaker. Output power: 2 channels *3W NOTE: The left and right channel output of "negative" cannot be connected together, otherwise it will burn the IC. Connect the speaker (load) and then powered.
PAM8403 Digital Amplifier Board 2*3W Class D