JD-A912 Car Amplifier OUT POWER (MAX) : 300Wx4 & 600Wx2(BRIDGED) FREQUENCY RESPONSE: 10Hz-50KHz AT 1.5dB INPUT SENSITIVITY : 100mV-2V SIGNAL RATIO : >95dB SUBWOOFER FREQUENCY: 30Hz-250Hz DIMENSIONS(LxWxH) : 330 x 280 x 55(mm)