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The Epicenter® by AudioControl

Bass restoration processor (Black)

Item # 161EPICEB

You like all the bumpin' bass you hear in hip hop, rap, and EDM? Well you can put that deep, biting bass into any...

You like all the bumpin' bass you hear in hip hop, rap, and EDM? Well you can put that deep, biting bass into any...

Item # 161EPICEB

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About the The Epicenter® by AudioControl

Kick up the bass

You like all the bumpin' bass you hear in hip hop, rap, and EDM? Well you can put that deep, biting bass into any kind of music — from classical, jazz, and rock to folk and Tejano — with an AudioControl Epicenter bass restoration processor. Most factory radios dial down bass response to protect flimsy speakers, so when you do add a subwoofer, there's no bass to play. The Epicenter will bring it back.

Kick up the bass

You like all the bumpin' bass you hear in hip hop, rap, and EDM? Well you can put that deep, biting bass into any kind of music — from classical, jazz, and rock to folk and Tejano — with an AudioControl Epicenter bass restoration processor. Most factory radios dial down bass response to protect flimsy speakers, so when you do add a subwoofer, there's no bass to play. The Epicenter will bring it back.

AudioControl's legendary Epicenter bass processor maximizes the low-frequency power and punch of your bass system, whether it's a simple powered bass tube or a full-blown competition setup. Simply install this processor between your receiver and your amplifiers or crossovers, and you'll finally be able to hear all the good bass you've been missing. An included wired remote lets you control the amount of thump from the front seat.

How does it do it?

Sophisticated processing analyzes the incoming signal and synthesizes low-bass fundamental tones, increasing bass response tremendously. The Epicenter connects to any receiver with preamp outputs — its balanced inputs will reject noise from your car's electrical system. A subsonic filter removes extreme low frequencies from your signal so your amps and subs will play more efficiently, while a single band ParaBass equalizer lets you fine-tune the bass tone.


Product highlights:

  • bass restoration processor
  • increases bass response from your system
  • 2-channel preamp inputs and outputs
  • Para-Bass controls adjust center-frequency and width of bass EQ processing
  • fixed subsonic filter (33 Hz, 12/dB octave)
  • wired remote bass level controller
  • frequency response: 10 to 100,000 Hz
  • fuse rating: 1A
  • 8-1/16"W x 1-1/4"H x 6-3/4"H
  • warranty: 5 years
  • Our 60-day money-back guarantee
  • MFR # 841-019-8

What's in the box:

  • Pre-amp Bass Restoration Processor (black)
  • Remote dash mount control
  • 20' RJ-14 cable
  • Owner's manual
  • QC checklist
  • Product registration card

Customer reviews

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The Epicenter® by AudioControl reviews

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15 reviews

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Juan from Silverdale, WA on 10/25/2018

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Works as expected. Not the first Epicenter I've owned. I have bought the "off" brand and Audio Control surpasses the competitor in sound quality hands down.

Pros: Awesome sound and quality!

Cons: None

Crutchfield response on

0 of 0 found this helpful

Great for some kinds of music, but not all

Scott from Herndon, VA on 6/2/2018

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Verified employee purchase (What's this?)

I tried this out but ended up returning it as it did not make my kind of music sound better. It really depends on what kind of music you listen to. For example if you listen to older music like classic rock or Spanish music that doesn't have much bass, this device will definitely improve the bass. However if you listen to newer music which already has bass like new rock, metal, or electronic music like EDM then this device will not help you at all. The way it works is it cuts half of the bass out, and the doubles it in a lower octave frequency. For example: if you have +10dB of bass at 80hz, and +10dB of bass at 40hz, then after processing you will have +5dB of bass at 80hz and +15dB of bass at 40hz. If you look in the manual it will show a nice chart and better describe this. So if you play bass heavy songs and then use it, it will actually CUT some of the higher bass and "move" it into the lower frequencies. So low, that my two 12" Alpines couldn't play it very well! Lots of noise and cone movement, but not punchy boomy bass like before this processor. Because of this it made most of the music I listen to sound worse, so I found myself just turning down the knob all of the way which defeats the purpose of it. I also found I had to turn the gain down on my amp because if you are not careful this device can overpower your speakers with too much bass. But like I said, if your music doesn't have much bass to begin with then this device will boost it to a good amount.

Pros: Adds lots of bass, great for large subs (15"+) that can produce low frequencies well

Cons: Can overpower speakers if you are not careful. Does not make all music sound better. Also the controls for the "sweep/width" didn't seem to make any difference.

Crutchfield response on

5 of 5 found this helpful

Great bass

Max gutierrez from Manassas,VA on 5/26/2017

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Good product would definitely continue buying this brand product

Pros: Great bass

Cons: Non

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3 of 3 found this helpful

The Epicenter

Sixtus from Cincinnati, OH on 1/24/2017

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This product is a buy you can't pass on. If you are looking for enhanced bass then this is the product for you.

Pros: Will do everything it says it will.

Cons: None

Crutchfield response on

4 of 5 found this helpful

Hear and FEEL your music.

Daryl from San Diego, CA on 12/26/2016

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Verified employee purchase (What's this?)

This functions as somewhat of a bandpass EQ. Use the "sweep" to pinpoint a frequency that you want a strong focus on. Use the "wide" to create the bell-curve of frequencies it will operate in. Don't use your head unit's EQ for the bass frequencies. Let the Epicenter do the work and prepare to be astonished not only by what you hear, but by what you feel. There is no catch-all setting for each type of music. You have to play with it. Amazing product.

Pros: Ridiculous bass. Easy addition to your system.

Cons: I wish AudioControl would put numbers on the dials so that you knew exactly what frequencies you were modifiying.

Crutchfield response on

5 of 5 found this helpful

Unbelievable bass

Ruben from Reedley ca on 11/25/2016

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Verified employee purchase (What's this?)

I installed a JL Audio 3v3 10 in a ported box powered by a fosgate 500 amp under the back seat of 2016 ext can sierra. Using stock speakers for kids and highs. Sounds great but on some sounds it didn't hit as hard. So I installed the epi center and omg people don't believe the I'm only running one ten in my makes a world of difference. Impressive bass on any song

Pros: Easy install inexpensive ext control

Cons: None

Crutchfield response on

8 of 8 found this helpful

Make your own earthquake with the Epicenter!

Charles from Staffordsville, KY on 10/3/2016

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Verified employee purchase (What's this?)

The Epicenter does not only make your bass louder (by boosting the RCA voltage) but it makes it deeper by creating a bass note 1/2 octave below the original bass note. Play a 100 Hz bass note and the Epicenter adds a 50 Hz bass note. A 60 Hz not gets a 30 Hz note, and so on. It works up to 250 Hz, so it should be placed before any subwoofer crossover. The dash mounted remote knob controls the volume of the added bass note. The wide and sweep controls on the top allow you to pinpoint a specific frequency area that you want boosted more. It also has a built in subsonic filter to protect subwoofers from damage. It's really a neat unit that adds fun to every type of music.

Pros: Nice small unit that make your bass deeper and more fun

Cons: Can't be used after a subwoofer crossover.

Crutchfield response on

5 of 10 found this helpful

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<< >>

More details on the The Epicenter® by AudioControl

Russ B.

Product Research


Bass Restoration: Rather than simply turning up the bass, the patented bass restoration circuit takes a full range input signal and measures the upper harmonics of the bass frequency range to determine what frequencies have been lost during the recording process, then correctly restores the missing bass information. The remote rotary knob allows you to control how much bass is restored to the system. A full range signal is output from the Epicenter that can feed a full range amp, a subwoofer amp (with built-in crossover), or an outboard crossover.

Para-Bass: Para-Bass is a single band, parametric equalizer for the bass output. The center frequency is continuously variable from 27 Hz to 63 Hz. The width of the band is also adjustable.

Bass Maximization: The Bass Maximization circuit allows The Epicenter to maximize the bass output of any system while restraining destructive bursts, which can damage speakers. the 5.0 volt factory setting can be changed to 2.5, 7.5, or 10 volts if the amplifier and speakers can handle it.

Remote: The bass restoration level is adjusted using the included wired remote. The remote is designed to be dash mounted, within reach of the driver; it can be mounted under the dash with the supplied bracket, or the bracket can be removed and the knob and LED can be custom mounted through the dash. Dimensions:

  • Width: 2.557"
  • Height: 1.489"
  • Depth: 1.824" (2.448" including knob)

Subsonic Filter: The subsonic filter crossover point is 33 Hz; it's governed by a replaceable chip, so it can be changed to 20, 25, 30, 35, 40, or 45 Hz.

Balanced Inputs: Using the balanced differential input circuit cancels noise picked up in the transmission line between the Epicenter and the the source unit. The inputs can be set to balanced or unbalanced if needed.

Ground Isolation: The power supply ground is switchable, in case of ground loop noise. The factory position is fully isolated (typically the best choice), but can be changed to Ground or 200Ω.

Terminal Block: The power/ground/remote terminal is removable; the wiring is attached to the block, then the block is plugged into the Epicenter.


  • Maximum Input Level: 15 volts RMS
  • Maximum Output Level: 9.5 volts RMS/13 volts peak
  • Frequency response: 10 Hz-100 kHz;±1dB
  • THD: 0.003%
  • S/N Ratio: 130dB
  • Balanced Input Noise Rejection: >60 dB
  • Input Impedance: 10 kΩ
  • Output Impedance: 150 ohms

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Customer Q&A

Crutchfield asked: Why did you buy this?
I have used The Epicenter in the past and wow, just wow. Who doesn't want lower, take your breath, shake your gut bass? [ Marshall  Sep 05, 2018 ]
To improve my system's bass sound [ Jean-Louis  Jul 09, 2017 ]
Recommended by a friend [ Kevin  Feb 18, 2017 ]
Adds bass to older Music. [ Arturo  Dec 22, 2016 ]

3 questions already asked

Is the subsonic filter only active when the Epicenter is actually turned on?
[ T-Bone  Jan 24, 2018 ]
2 answers
Yes that's correct.
[ Sixtus Jn  Jan 24, 2018 ]
The subsonic filter is on all the time even if the Epicenter's processing is not being used. The PFM subsonic filter shipped with the Epicenter is set at 33 Hz. Sounds below 33 Hz will still play but at a decreasing volume as lower the sound . You can buy PFM filter chips from Audiocontrol directly by going to the AC website, clicking on "CAR" at the top, scroll down to "ACCESSORIES", and then click on "MODULES", and finally clicking on the "Buy Now" link on the blue line at the top. You have to pick the 18 dB/Octave choice for the Epicenter. The 24 dB/octave choice is for AC crossovers. Frequencies from 15 Hz and up are available and cost $10 each plus S+H.
[ Charles  Jan 24, 2018 ]
Does this product help to add the missing bass to the car door speakers? Only reason im looking at this is to improve my speakers. I have two 12 subs. I dont need sub bass. I want speaker bass.
[ Nick  Aug 22, 2017 ]
3 answers
You want more bass out of your door speakers? What crossover is used for them? Are they big enough to produce what you're looking for? The Epicenter adds bass back into music that may have been removed when converted to MP3 or during studio recording, etc. Most of what it adds to the music is in the sub bass range. This product doesn't necessarily add more volume throughout the sub bass range, only at the frequencies where it's been taken out. Audiocontrol's website has a great explanation of what it does and at what frequencies.
[ Charlie  Aug 23, 2017 ]
Not unless your door speakers are hooked up to your power amp, in which case I would recommend an LQ7 or LQ9 it lets you control the sound all around to your preference.
[ Antonio  Aug 22, 2017 ]
No, this will not get more bass into your door speakers. You are looking for more midbass, which is typically between 50-250 Hz. The Epicenter works its magic mostly under 50Hz. What you need is dedicated midbass speakers that are at least 6-1/2 inches in diameter or larger and have plenty of amplifier wattage powering them to get good midbass out of the door locations. There are other tricks to improve your midbass like adding sound damping materials to the doors and sealing all holes in the door. Search Youtube for videos on how to improve your midbass. Here are a couple of videos to get you started: 1. 2. Hope this helps.
[ Charles  Aug 22, 2017 ]

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