Orion ZO2000.4 ZTREET Series 2000 Watts Amp 4 Channel Car Speakers Amplifier 90 Watts RMS x 4 @ 4 ohms 125 Watts RMS x 4 @ 2 ohms Total Peak Power: 2000 Watts Selectable Bass Boost: 0/+6/+12 dB Heavy duty aluminum alloy heat-sink for extreme heat dissipation