Amplifier board VA-6501 PA1/VA-6501PA2/VA-6501PA3/VA-6501 PA5 Specifications * Size: length 250mm x width 120mm x thickness 60mm * Input voltage: ± 80V DC * Output voltage: AC100V VA-6501PA1 : 120W VA-6501 PA2 : 240W VA-6501PA3 : 350W VA-6501PA5 : 500W * Distortion: <1 % (rated output power), 1 KHz * Frequency response: 40Hz-16KHz (+ 1dB, -3dB) * Signal noise ratio: >80dB * Cooling method: forced air cooling * Protection methods: overvoltage protection, overcurrent protection, high temperature protection, overload protection, short circuit protection * Power amplifier input: digital signal and 100V emergency audio signal * Emergency audio interface type: balanced input Features * Digital decoding power amplifier board. * High efficiency class D power amplifier. * Built-in digital decoder to decode network audio directly. * Support local emergency audio input broadcast when network is disconnected. * Support loop state detection of output partition. * Support up to 5 power amplifier boards to form 4 main and 1 backup mode. * Support real-time indication of the working status of the power amplifier board. * Support automatic switching of power amplifier board failure. * Support continuous electrical maintenance, need to use the start and stop function on the module.