Board Size: 55 X 83 X 29mm (excluding the protrusion of the potentiometer 15mm) Operating voltage range: DC9-25V (current 2-3A or more, if the power is larger, it is recommended to be 19-24V4A or more) Frequency response range: Input: 20Hz-20KHz Output: 20Hz-180Hz Audio input sensitivity: 500mV Subwoofer impedance: 2-8 ohm
