Fusion FM-402 2-Channel 400 Watt Marine Amplifier FUTRANZ Heat Sink Technology, which transfers heat more efficiently and offers more thermal stability and maximum component reliability. F.R.A.T. FUSION Regulated Amplifier Technology, which outputs enormous power output at the lowest voltage F.I.S.T. FUSION Intercooled Semi-Conductor Technology, which clams down internal power switching - rapidly removing heat from all associated semi-conductors Frequency Response: 5Hz - 38kHz +/- 3dB, Peak Power: 400 Watts, 50 Watts RMS x 2 @ 4Ohm, 1% THD+N 96 Watts RMS x 2 @ Ohm 1% THD+N 160 Watts RMS x 1 @ 4Ohm Bridged 1% THD+N Depth: 10.24" Height 2.26" Length 8.7"