This is a digitally controlled stereo electronic audio volume board with a gorgeous appearance. It features a mature volume adjustable module and external power and signals output connector. Several wiring methods such as 3.5 mm Socket (Default) facilitate connection. Analog and digital section powers are used independently to minimize interference. Excellent heat dissipation eliminates the need for an extra heatsink. Over temperature, over current protection, and power supply, anti-reverse protection is included to extend the longevity of the board.