Details：

With boot delay

With speaker protect

Output DC protection cut off

Power amplifier power supply overcurrent protection, status indicator LED

When the power is turned on, the LED flashes in the delayed state. After detecting that the power amplifier is normal without DC, the relay is turned on. The LED stops flashing.

When the power amplifier outputs DC and the relay is protected, the LED flashes to remind.

PCB Length: 136MM

PCB Width: 67MM

Capacitance： 4pcs 10000uf 50V

Input voltage:AC20V-0-AC20V To AC32V-0-AC32V

Note：

Assembled Board:have tested it well !