HCP1MDK Mono Marine Amplifier features latest generation D-Class 2 ohm stable output stage reaching the impressive RMS power of 740 W x 1 (4 ohm). Engineered and tested for the real environment of application (UV, salt-fog, vibrations, high/low temperature, thermal shock, dust), HCP1MDK features a compact design built from extruded aluminium heatsink with top side ensuring effective heat transfer. The special balanced input circuitry reject electro-magnetic disturbances and the Hi-Level and lo-level inputs are compatible with any source. The Adjustable Bass Boost (50 Hz) with continuity between 0 dB and 6 dB adds more punch to subwoofer and SUBSONIC filter (24 dB - 25 Hz), removes very low subsonic frequencies from music signal to prevent damage to the subwoofer. The continuously adjustable PHASE control (0 to 180 degree) optimises alignment of woofer bass frequencies with sub ones. The Optional Remote Volume Control (HRC) provides the ability to adjust subwoofer volume level from the dashboard.