Kicker 40KXM4002 2 Channel 400 Watt RMS Class D Full-Range Marine/Boat Amplifier - Space Saving Compact Design Kicker 40KXM4002 2-Channel Full-Range Marine Amplifier Power Handling: 2-Ohm Stereo: 200 Watts x 2-Channel RMS 4-Ohm Stereo: 100 Watts x 2 Channels RMS 4-Ohm Bridged Mono: 400 Watts x 1-Channel RMS Weather-resistant workhorse power and performance