Spec :
·Class D amplifier Bridged: 220Watts*2+350Watts*1 Power@1 Ohm: / Power@2 Ohm: 125 Watts*4+ 350W*1 Power@4 Ohm: 75 Watts*4+ 190W*1 S/N : 85dB , Working voltage: 9-16V Frequency response:10HZ -22KHZ