Amplifier Rispetto RO-A1 Rispetto RO-A2 Rispetto RO-A4 Rispetto-RO-A2Specification:- Two Channel Amplifier Class AB 2 x 220 Watts @ 2 Ohm 2 x 140 Watts @ 4 Ohm 1 x 450 Watts @ 4 Ohm bridged 12 dB High Pass: 15 Hz – 500 Hz 12 dB Low Pass: 50 Hz – 5 kHz Dimensions (LxWxH): 365 x 210 x 50 mm