Pioneer 2 Channel Car Audio Amplifier 900W Class A/B Amp + 4 Gauge Wiring Kit Pioneer GM-A5602 2 Channel 900 Watt Amplifier 2 Ohms: 225 Watts x 2 4 Ohms: 150 Watts x 2 Bridged @ 4 Ohms: 450 Watts x 1 Max Power: 900 Watts