O2 ELA18001 Mono Channel, Class D Amplifier, 1800Watts (O2 Element Amplifier ELA-18001) RMS Watt@4Ohm: 700W x 1 RMS Watt@2Ohm: 1000W x 1 RMS Watt@1Ohm: 1400W x 1 Bridged Power: 1800W THD At Rated Power%: 0.10%