Rockville RXM-F3 1600 Watt Marine/Boat 4 Channel Amplifier Amp+Pa Microphone By admin in rockville November 16, 2023 If water gets sprayed on the amplifier you will not have to worry. Rockville Rxm-f3 1600 Watt peak/800W RMS Marine class D mono block amplifier. Fully adjustable 12Db Bass equalizer. 2 ohm stable stereo.