Kenwood KAC-M8005 800W RMS 5 Channel Class D Marine Boat Stereo Amplifier By admin in kenwood November 1, 2023 5-channel marine amplifier – 50 watts RMS x 4 at 4 ohms + 500 watts RMS x 1 at 2 ohms. 75 watts RMS x 4 + 500 watts RMS x 1 at 2 ohms. 150 watts RMS x 2 bridged at 4 ohms + 500 watts RMS x 1 at 2 ohms.