Cadence Acoustics CSA1000.2 600 Watt Peak 2-Channel Class AB Amplifier Momentum CSA Series 2-Channel Class AB Full Range Amplifier RMS Power Rating: 4 ohms: 75 watts x 2 chan. / 2 ohms: 150 watts x 2 chan. Max power output: 600 watts x 1 chan. Frequency Response: 20Hz - 20 kHz High Speed MOSFET Power Supply