5-channel marine amplifier – 50 watts RMS x 4 at 4 ohms + 500 watts RMS x 1 at 2 ohms. 50 watts RMS x 4 + 300 watts x 1 at 4 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. Conformal-coated circuit board – suitable for power sports and marine applications. Variable low-pass filter on subwoofer channel (50-200 Hz at 24 dB per octave). Separate variable high-pass filters on front and rear channels (50-200 Hz at 12 dB/octave). Variable bass boost on sub channel (0-18 dB at 40 Hz). Preamp and speaker-level inputs. 4-gauge power and ground leads recommended – wiring and hardware not included with amplifier. 9″W x 2-3/16″H x 7-3/8D. Three 30A ATO fuses (installed). 2.5mm Allen wrench. 4 Self-tapping screws (M4 x 16mm).