Hifonics HAC-3000.1D 3000 Watt Mono Amplifier 1 Ohm Class D Car Audio Amp

The Hifonics HAC-3000.1D is a COLOSSUS PRO mono block amplifier rated at 3000W, built on a half-bridge design that uses fewer components to produce more output. It runs 1 x 3000W at 1 ohm, 1 x 1500W at 2 ohms, and 1 x 750W at 4 ohms, which supports multiple subwoofers or a single high-excursion sub in a competition-style build.

Thermal management comes from a variable-speed fan working with a mass-loaded extruded aluminum heat sink, so the amplifier holds output through long, loud sessions. An iron core transformer keeps electromagnetic interference low, which matters when the amplifier shares a vehicle with sensitive factory modules.

Controls include a variable high-pass from 15Hz to 1kHz, a variable low-pass from 50Hz to 10kHz, both at 12dB per octave, and built-in bass control with 0 to 12dB of boost. Input sensitivity runs 0.2V to 8V, signal-to-noise is rated at 88dB, and THD stays under 0.1%. The included bass remote sets subwoofer level from the seat and shows green when powered, red in protect.

Over and under voltage, short circuit, and thermal protection circuits cover the amplifier and the subwoofers connected to it, and delayed turn-on keeps hisses and pops out of the system. Power connections take 0 AWG cable with 12 AWG speaker terminals behind a 200A external fuse. The chassis measures 12in x 10in x 3in and weighs 9.35 lb, with blue LED Hifonics badging and a CNC machined Colossus badge.