ITEM NAME:Audio Amplifier Board, Pam8406 Digital Power Amplifier Board 5W+5W ImmersionO2K3 Audio Amplifier Board, Pam8406 Digital Power Amplifier Board 5W+5W ImmersionO2K3 Supply voltage: DC 5V (Do not overvoltage, overvoltage will burn IC) Input method: single-ended Output power: 5W 2ÃŽ © 5V 3W 4ÃŽ © 5V 1.8W 8ÃŽ © 5V Product weight: 25g Efficiency: more than the 90% Total Harmonic Distortion plus Noise: Less than10% Low quiescent current Noise suppression Protection: reverse power supply input protection, short-circuit, overheat, pass EMI Additional features: External power amplifier type selection function (MODE: high level D, low level AB, factory default high level) External Shutdown (SD: Chip Shutdown at Low Level, Factory Default High) Can be muted externally (MUTE: low-level mute, factory default high) Colour:black Material:plastic Size:55.12mm*32.26mm Package Contents: 1* audio amplifier board.Output power: 5W 2ÃŽ © 5V 3W 4ÃŽ © 5V 1.8W 8ÃŽ © 5V. External power amplifier type selection function (MODE: high level D, low level AB, factory default high level). External Shutdown (SD: Chip Shutdown at Low Level, Factory Default High).