BG-4000.1D BRUTUS GAMMA 4000 Watt Amplifier

Hifonics 4000 Watts BRUTUS GAMMA Mono Subwoofer Car Audio Amplifier.

$ 659.99

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SKU: 806576231646 Category:

Hifonics BRUTUS GAMMA Mono subwoofer audio amplifier delivers 4000 watts with Super D Class™ technology that features Ultra-Fi™ MOSFET outputs that are selected for both balance and output power.

Weight 13.65 lbs
Dimensions 21.94 × 11.81 × 4.06 in











Bright Silver Hairline Anodized Finish

Model Replaced



1 Year

Compatible Vehicles


Amp Class

Super D-Class®

Amp Total Channels


Amp Max Power (watts)


Amp Power @ 1 Ohm (ch x watts)

1 x 4000

Amp Power @ 2 Ohms (ch x watts)

1 x 2000

Amp Power @ 4 Ohms (ch x watts)

1 x 1000

Amp Crossover

Variable Electronic 12dB Per Octave

Amp Variable Low Pass Crossover 12dB per Octave


Amp Tone Control / Parametric EQ

Built-in Bass Control

Amp Bass Boost


Amp Subsonic Filter


Amp Phase Shift

0-180 Degrees

Amp Variable Voltage


Amp Frequency Response


Amp Total Harmonic Distortion (THD)

< 0.1%

Amp Speaker Level Audio Inputs


Amp Power Terminal 12v/GND


Amp Speaker Terminal Wire Gauge

12 AWG

Amp Fusing


Proposition 65 Notice WARNING: Cancer and Reproductive Harm -
Low Noise Preamplifier Circuit

Maximum low voltage signal from the source unit comes into the amplifier circuit with minimal distortion.

RCA Inputs

Nickel-plated RCA jacks create the most efficient High/Low Level audio connection and resist corrosion.

Operation Mode

Mono only

Crossover Type

Variable electronic crossovers allow for complete control of the sound.

Electronic Equalizer

Control of amplifier output with on-board electronic crossover to tailor specific frequencies to speakers and subwoofers.

Class / Topology

Super D-Class™ designs which employ high-speed microprocessors with proprietary D/A conversion algorithms to efficiently control the current consumption. At very high listening levels, Hifonics amplifiers with Super D-Class circuitry result in lower distortion, higher current efficiencies and less heat than conventional D-Class amplifier designs.

Output Device Technology

Pro-Fi™ Output Device Technology: The Ultra-Fi™ MOSFET is designed for music production vs just electronics output power. It produces very musical high power with high efficiency for cooling and minimal distortion.

Heat Sink

Classic aluminum Hifonics design to minimize heat build up on the Ultra-Fi™ output devices.

Power Supply

Simpatico Coil Design: The dual coil Pulse Width Modulated power supply keeps voltage constant through the Ultra-Fi output devices.

Output Connections

High temperature impact resistant nickel plated connectors with allen head set screws which allow for secure termination of wire and creates an erosion resistant seal.

Connection Type

Secure molded connection terminal for all Power, Ground and Speaker connections. Angled for ease of access while creating a clean wire mangement profile.

LED System Protection Circuitry Diagnostics

Monitor overload and speaker short protection with illuminated indicators on the amplifier end panel.

Bass Remote Included

Wired Bass Remote allows adjustments to bass frequencies from the control which can be mounted anywhere in the vehicle.

Phase Adjustment

Phase 0-180°: Bass drum attack, snap requires phase between deep frequency subwoofers and upper midbass speakers.


Power Strapping allows the installer to Sync the input signal and output power to double the rated output of a mono amplifier which will drive a single subwoofer or group of subwoofers. Driving subwoofers with this method doubles the available power to the overall bass system, while insuring each subwoofer receives the exact same power level (output voltage). CONSULT PROFESSIONAL INSTALLER.

Coming Soon

Product documentation and files are not yet available.