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Hifonics BG-4000.1D Brutus Gamma Monoblock Super D Class 4000 Watt Car Audio Sound System Subwoofer Speaker Amp with Bass Knob, Remote

  • Based on 1,298 reviews
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Availability: In Stock.
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Arrives Wednesday, Mar 11
Order within 13 hours and 12 minutes
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Model: BG-4000.1D


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

Manufacturer: MAXXSonics


Maximum Supply Voltage: 12 Volts (DC)


Mounting Type: Car Mount


Brand: Hifonics


Number of Channels: 1


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: BG-4000.1D


Date First Available: November 30, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Mar 11

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.

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Top Amazon Reviews


  • Great amplifier for the money!
Model: BG-4000.1D
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

  • El producto es de muy buena calidad
Model: BG-4000.1D
Super calidad fuerte con mi base claridad de sonido
Reviewed in the United States on August 14, 2025 by Omar Vargas

  • Shop for better
Model: BG-4000.1D
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. ... show more
Reviewed in the United States on June 17, 2024 by Bryan Johnson

  • It’s a beast
Model: BG-4000.1D
Love this amp best amp I’ve ever purchased puts out a lot of wattage and never did overheat
Reviewed in the United States on October 21, 2023 by Robert Souza III

  • Probably worth the money...
Model: BG-4000.1D
Integrated this into my car audio system and while it works and is probably worth the money at this price point, I'm not impressed with it's output so far. Highly questionable that it does 4000 watts RMS at 1ohm. Just saying...
Reviewed in the United States on August 26, 2024 by Jason

  • Great power
Model: BG-4000.1D
Makes great power for the money
Reviewed in the United States on March 22, 2023 by Kim n John

  • Bad ass
Model: BG-4000.1D
Best amp ever bought! it's about 3300watts rms. Hits hella hard
Reviewed in the United States on February 28, 2022 by Andy Alvarez

  • Garbage Chinese Junk, buy at your own risk
Model: BG-4000.1D
Hifonics used to be a great brand but over the past years their quality control has just been garbage. The last 2 Hifonics amps I’ve ordered were both defective out the box! Including this one! Paid almost $300 for this junk and Amazon only gave me a $235 refund! Don’t know what’s up with that! Wouldn’t even give 1 star if I could. Will never buy anything made by Maxxsonics again! Buy this AT YOUR OWN RISK! ... show more
Reviewed in the United States on April 2, 2023 by Tony L

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