Soundstream P5.610 610W 5-Channel Class AB/D Picasso Series Car Amplifier Picasso Series 5-Channel Class AB/D Car Amplifier RMS Power Rating: 4 ohms: 170 watts x 1 chan. / 2 ohms: 270 x 1 chan. / 4 ohm, Bridged: 270 watts x 1 chan. Max power output: 800 watts Pulse Width Modulated MOSFET power supply Heavy duty aluminum heat sink