: Chips: TPA3116D2+NE5532 Max Power? 100W Full frequency response? 20Hz-20kHz(±3dB) The speaker matches the impedance? 4-8? Number of Channel: Mono Working Voltage? DC12-24V THD? Output 1W@ 0.03% SNR?? 106dB Input sensitivity? 0.2mV Dimension:118.5*98*33MM(without protruding knob ...: Chips: TPA3116D2+NE5532 Max Power? 100W Full frequency response? 20Hz-20kHz(±3dB) The speaker matches the impedance? 4-8? Number of Channel: Mono Working Voltage? DC12-24V THD? Output 1W@ 0.03% SNR?? 106dB Input sensitivity? 0.2mV Dimension:118.5*98*33MM(without protruding knob section) Bass cutoff frequency range adjustment: 40-300Hz Control: Potentionmeter knob and toggle switch Audio input: RCA Audio outout: Gold-plated interface Slope of bass attenuation: -12dB Slope Package include: 1pc TPA3116D2 Mono Subwoofer Amplifier(with english manual? Note: without power supply. recommend DC19V!