High Power Mono Digital Amplifier Board with Over Temperature Protection - 4-8Ω / 10-18inch Speaker Compatible - Perfect for Home Audio, DIY Projects, and Professional Sound Systems

Features: 1.Output short circuit protection.2.Output DC bias protection speaker protection.3.Over temperature protection: the output will turned off when the temperature of the heat sink FET is higher than 100 °C. 4.This is a pure power amplifier board, whose sensitivity of the input signal of 1.5V rms, if your input signal voltage can't this value, recommend add preamp. 5.Mono channel,for 2.0 channel need bid two. Spec: Power supply: dual DC power supply ± 58-± 70V The rated output power: 500W (± 65V power supply, 4 ohm load, distortion 10%) Efficiency:> = 90% SNR: 90dB The total harmonic distortion: 380W (± 65 power 4 ohm speaker, distortion <0.1%) 280W (± 65 power 8 ohm speaker, distortion <0.1%) Frequency range: 20Hz-20KHz Speaker: 4-8ohm Voltage Magnification: 36 times Input sensitivity 1.5V (RMS) Output short circuit protection: Yes That output DC bias protection speaker protection: Yes Over-temperature protection: Yes, FET temperature higher than 100 ° C, turn off the output! Use precautions: 1. Rated supply voltage is ±65V, ±58---±70V range, do not over 70V! positive and negative do not pick wrong 2. Recommended power supply ±65V 3. Recommended 4-8Ω / 10-18inch speaker 4. Carefully check before electricity, ensure the wiring is correct. Package list: 1 x Digital Amplifier