Hifonics HCM-1500.1D 1500 Watt Mono Amplifier Mini 1 Ohm Class D Car Stereo Amp

The Hifonics HCM-1500.1D is a COLOSSUS MINI mono block amplifier rated at 1500W in a chassis measuring 11.5in x 5.28in x 2.72in. That combination is what makes it useful: full-size subwoofer power in a body small enough for a motorcycle, a UTV dash, or a behind-seat mount in a truck.

Power ratings are 1 x 1500W at 1 ohm, 1 x 750W at 2 ohms, and 1 x 375W at 4 ohms. A mass-loaded extruded aluminum heat sink handles cooling without a fan, so nothing spins, whines, or pulls dust into the amplifier on a trail machine. An air core transformer supports the high switching frequencies of the Class-D output stage while keeping losses low.

Controls cover a variable high-pass from 15Hz to 1kHz, a variable low-pass from 50Hz to 10kHz, and built-in bass control with 0 to 12dB of boost, with input sensitivity from 0.2V to 5V. Frequency response runs 10Hz to 11kHz with under 0.1% THD. Preamp outputs pass signal to a second amplifier if the system grows.

Over and under voltage, short circuit, and thermal protection circuits guard the amplifier and subwoofer, and delayed turn-on keeps hisses and pops out of the speakers. Connections use 0 AWG power and ground and 12 AWG speaker wire on molded angled terminals behind a 150A external fuse. The included bass remote sets subwoofer level from the seat and shows green when powered, red in protect. Weight is 5.2 lb.