Hifonics BG-4000.1D Brutus Gamma Monoblock Super D Class 4000 Watt Car Audio Sound System Subwoofer Speaker Amp with Bass Knob, Remote
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
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Availability:
In Stock.
Arrives
Tuesday, Dec 23
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Model: 4000 Watt Monoblock
Features
- POWERFUL SOUND: Deliver powerful sound to your speakers and subwoofers with this Super D Class, 4,000-watt, mono car audio amplifier; Wired bass remote included
- OPERATION: Control your sound with mono only operation, variable electronic crossover, and electronic equalizer capabilities; Monitor overload and speaker short protection with illuminated indicators on the amplifier end panel
- OUTPUT TECHNOLOGY: Ultra-Fi MOSET output device technology and classic Hifonics aluminum construction for powerful sound, efficient cooling, and minimal distortion
- CONNECTORS: Secure molded connection terminal with easy-to-access, angled ports for all power, ground, and speaker connections and high-temperature, impact-resistant, nickel-plated connectors; Nickel-plated connectors deliver efficient high/low level audio, crisp sound, while providing a secure and erosion-resistant seal
- POWER: Power ratings: @ 1 ohms - 1 channel x 4,000 watts; @ 2 ohms - 1 channel x 2,200 watts; @ 4 ohms - 1 channel x 1,100 watts; Dual coil Pulse Width Modulated power supply keeps voltage constant through Ultra-Fi output devices
Voltage: 12 Volts (DC)
Manufacturer: MAXXSonics
Maximum Supply Voltage: 12 Volts (DC)
Mounting Type: Car Mount
Brand: Hifonics
Voltage: 12 Volts (DC)
Manufacturer: MAXXSonics
Maximum Supply Voltage: 12 Volts (DC)
Mounting Type: Car Mount
Brand: Hifonics
Number of Channels: 1
Output Power: 4000 Watts
Material: Aluminum
UPC: 806576231646
Item Weight: 13.52 pounds
Item model number: 4000 Watt Monoblock
Date First Available: November 30, 2020
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Dec 23
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Model: 4000 Watt Monoblock
The media could not be loaded. So far this amplifier is pretty impressive. Makes tons of power and looks great. You will definitely need to upgrade your electrical a bit to safely run this amplifier an extra battery to support up to 3000 watts RMS.
Reviewed in the United States on December 8, 2024 by Jonathan Jonathan
Model: 2500 Watt Monoblock
Gotta it running my 15 by ds18 got heads turning just for one behind this amp. Does wonders at 1ohm
Reviewed in the United States on December 10, 2025 by Amazon Customer
Model: 1000 Watt 4 Channel
Absolutely amazing amplifier, I’m using it for running 4 6x9 and 2 tweeters. It does run a little warm but overall is an amazing amp I’ve ran it pretty hard and it hasn’t gone into protection mode once so it’s pretty durable I would say. It is very tuner friendly for everything.
Reviewed in the United States on September 1, 2025 by Connor
Model: 1000 Watt 4 Channel
So it began with a high phonics Zeus model which sounded great I had for JL audio speakers, C series, components in the front coaxial in the back. Everything sounded good amplifier ran nice and cool no issues. Read about the Brutus series saw that I had a couple extra features I liked it had better power transfer to sound. It has less distortion and uses power more efficiently. I installed on the same footprint it was the same footprint as the Zeus but what a difference. The base output was stronger the highs were clearer overall song quality was totally noticeable. I’ve been doing car audio for 25 years and I was very impressed with these amplifiers. But if I was starting from scratch I probably would’ve just bought the Brutus to begin with. I also just ordered a 1900 Brutus mono amp that’s on the way that is going to be an upgrade from the Zeus 3300 will see how it sounds
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Reviewed in the United States on May 3, 2022 by maxx maxx
Model: 4000 Watt Monoblock
Amp lasted less than 6 months. Speaker output quit without any signs of fault or product misuse. Device looks pristine, all lights and switches function as they should but simply no speaker output. Tested wiring and used alternate device to verify issue is this amp. Unit is trash since I purchased no warranty. Never had an amp fail so quick.
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Reviewed in the United States on June 17, 2024 by Bryan Johnson
Model: 2500 Watt Monoblock
Good amp could've used a Lil more detailed instructions on how to set it up
Reviewed in the United States on December 14, 2025 by Steven harper
Model: 2500 Watt Monoblock
Works better than any other brand has back lights bright blue stays cool
Reviewed in the United States on October 13, 2025 by Stefanie Stefanie
Model: 1600 Watt 4 Channel
Honestly it overheats sometimes, but I've had it for a while before I went more professional with Sundown & Deaf Bounce. I must say though I pushed this thing, had it running speakers and a subwoofer damn near maxing it out every time I drive, and it still works like a champ!
Reviewed in the United States on June 16, 2025 by Lake Kastanek