Fusion MS-AM702 2 Channel 140 Watt Compact Marine Amplifier Class-D High Effeciency Technology Compact 4 3/4" x 1 15/16" Wateproof Chassis Conformal Coated PCB 70 watts x 2 (max) 26 watts RMS at 4 ohms per channel 43 watts RMS at 2 ohms per Channel