500W Mono Channel Digital Amplifier Class D HIFI Power Amp Board With FAN

This is a pure power Audio amplifier board, the sensitivity of the input signal of 1.5Vrms, if your input signal voltage can't reach this value, recommend add preamp. Mono channel, for 2.0 channel need bid two. The rated output power: 500W ( DC +/- 65V power supply, 4 ohm load, distortion 10%) Efficiency: ≥90% SNR: 90dB colour: blue The total harmonic distortion: 380W (+ /- 65 power 4 ohm speaker, distortion Less than 0.1%) 280W (+ /- 65 power 8 ohm speaker, distortion Less than 0.1%) Frequency range: 20Hz-20KHz Speaker: 4-8ohm Voltage Magnification: 36 times Input sensitivity 1.5V (RMS) 0. Output short circuit protection: Yes That output DC bias protection speaker protection: Yes Over-temperature protection: Yes, radiator FET temperature higher than 100 Celsius, turn off the output! Amplifier board size: length x width x height = 98x43x30mm Weight: 95 g