4-Channel Class A/B Amplifier 4 x 80 Watts RMS @ 4 Ohms 4 x 160 Watts RMS @ 2 Ohms Lowpass: 3OHz – 300Hz Highpass: 40Hz – 500 Hz Bass-Boost: 0 dB – 18 dB Frequency Response: 10Hz – 50 KHz Input Sensitivity: 0.2 – 4V RCA Line Outputs & Inputs Lowpass / Highpass / Full Switch