Skip Navigation

The Epicenter® by AudioControl

Bass processor (Gray)

11 Reviews | 1 question - 4 answers

Item # 161EPICEG

This item is no longer available.

Shop all Bass Boosters

New model available


Our take on the The Epicenter® by AudioControl

Jealous of all the bumpin' bass you hear in hip hop, rap, and EDM? Well you can put that deep, biting bass into your classic rock or Tejano music with an AudioControl Epicenter bass processor. Most satellite and factory radios compress and dial down bass response to protect flimsy factory speakers, so when you do add a subwoofer, there's no bass to play. The Epicenter will bring it back.

Kick up the bass

Jealous of all the bumpin' bass you hear in hip hop, rap, and EDM? Well you can put that deep, biting bass into your classic rock or Tejano music with an AudioControl Epicenter bass processor. Most satellite and factory radios compress and dial down bass response to protect flimsy factory 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 tube or a full-blown competition setup. Simply install this processor between your car's receiver and your outboard amplifiers, and hear what you've been missing.

How does it do that?

Sophisticated processing analyzes the incoming signal, restores low bass fundamental tones, and increases your bass response without stressing out your speakers. You can connect The Epicenter to any receiver with preamp outputs — its balanced inputs will reject noise from your car's electrical system. A subsonic filter removes extreme low bass from your signal so your amps and subs will play louder and cleaner, and a single band ParaBass bass equalizer lets you fine tune the bass.

Just rotate the single knob on the included dash-mounted controller to control bass restoration — it's that simple. The Epicenter does a great job of pumping up digital music files or live recordings on disc, restoring low bass that's been lost to compression or poor recording. Plus, iPods and other MP3 players roll off low bass in order to make your headphones sound better. With one twist of a knob, the Epicenter restores these low frequencies, making your iPod sound better over your car's sound system.

Important note: Connect The Epicenter between your receiver and amplifier, before any external crossovers.

Product Highlights:

  • bass restoration processor (gray)
  • 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 dash-mount bass remote
  • 8"W x 6-1/2"H x 1-3/16"D
  • frequency response: 10 to 100,000 Hz
  • weight: 1.7 pounds
  • warranty: 5 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Pre-amp Bass Restoration Processor
  • Remote dash mount control
  • 20' RJ-14 cable
  • Adhesive backed remote label
  • Owner's manual
  • QC checklist
  • Product registration card

This reproduces some crazy bass wow

Anonymous, California


The Epicenter® by AudioControl Reviews

Average Customer Review(s):

(11 Reviews)

It works, but with trade offs

Cableman from Texas on 10/1/2015

I have a great respect for the products from Audio Control and have been a customer for 25 years. The Epicenter does what it says and can make a lot of bass. The problem is that the bass is very synthetic sounding, because, well, it is synthetic. The Epicenter is adding sound to your music, and this sound comes from its computerized self. This works well for EDM (electronic dance music) or similar music that is heavily processed and synthesized already, but it does not work well for most music. I would not recommend this product for most people.

Pros: Does what it says. Easy to use. Clean design. Reasonable cost.

Cons: Can produce synthetic, fake sounding bass. Not well suited for most music types.

Perfect For What It Does

GoremanX from Georgia, VT on 8/31/2015

Where The Epicenter excels is at restoring bass harmonics that have been lost. If you listen to a lot of classic rock, or your music source has been violated somehow (weak headphone amp as a source, low-bitrate mp3, etc), then you've probably noticed that your awesome subwoofer setup isn't doing much of anything. Cranking up the sub kinda helps, but it also introduces noise and distortion because you're just overboosting a really weak sub-bass signal. That's where The Epicenter comes in. It takes the existing Clean and Strong signal from the bass and mid frequencies and generates appropriate sub-bass harmonics from those tones. This essentially restores the sub-bass that got scrapped in the original source. The result is clean and strong sub-bass for your subwoofer to bounce to. Having said all that, if you send strong sub-bass signals through The Epicenter, it tends to distort them. I've seen the resulting sine wave, and it's not pretty. Makes me cringe. This is where the remote knob comes in. Turned all the way down, it completely disables the processing and allows a clean, unmolested signal through. The more you turn up the knob, the more sub-bass gets added. If you listen to modern boom-boom music with good source material from a solid source unit, this product is useless for you. Either don't use it, or keep it disabled. But if you listen to classic rock, heavily-compressed mp3's or your source unit has a weak headphone amp (I'm looking at you, iPhone), then buy this.

Pros: Works great at what it was meant to do. Low power draw. Fits anywhere. Straightforward configuration. Good sub-bass line driver, with a signal boost up to 10 volts!!

Cons: Tends to distort existing sub-bass (keep it disabled for songs with existing strong sub-bass content). The remote knob Must be present and plugged in at all times for this product to actually do anything. The signal boost is only applied to the generated sub-bass frequencies, so this is NOT a good general-purpose line-driver. Needs to be installed Before any crossover so it can see the entire frequency range in the signal.

mad bass

Anonymous from California on 9/2/2013

Crutchfield Customer Review (What's this?)

This reproduces some crazy bass wow



This thing really works

JP from Schertz TX on 3/27/2012

I bought one of these in 1997 and asthetically it looks unchanged...Why change it if it works! Anyhow, my system included Orion NT Subs hooked up to an Orion 2250 bridged down to .5 ohm...serious bass for those who are unfamiliar with this Orion line of subs and amps. This epicenter would actually not sound good with extreme bass music or modern rock considering I already had more bass than the ear could handle. However, when playing 50s, 60s and 70s music this epicenter truly enhanced the bass response making the older music much more enjoyable. The epicenter works as advertised by taking the peak of each bass note and allowing your system to carry the bass note at its peak through a longer period of time before the bass note drops off.

Pros: Works fantastic with music lacking good bass to begin with. My friends could hardly believe their ears when I turned up the epicenter to the Supremes!

Cons: Does not sound good with extreme bass music (DJ Magic Mike, Techno Bass...etc...) but you can turn the epicenter all the way down when playing this type music and it will not affect any output. Literally, turning the knob all the way down is like turning it off.

AudioControl Epicenter

TurnHeading360 from Tampa, FL on 8/10/2011

Crutchfield Customer Review (What's this?)

It's so,so... I was expecting more. It's not doing anything really; the signal input is no different than the signal output. If I turn up the knob all it seems to do is just increase the volume level of the subs, I even degraded some songs from 320 to 196 just to see if the machine would fix anything...nothing. Maybe it's broken...who knows.



The best tool for anyone that loves bass!

CSR from Gadsden, AL on 4/8/2011

If you love bass, and I mean all aspects of bass reproduction, then there is absolutely no better component than this! With The EpicenterT installed in your system, any system, you will Experience bass like you never have before! Not only will you Hear & Feel all of the bass notes that you've been missing, every single bass note that is reproduced will Feel & SOUND better than they ever have before...cleaner, clearer, deeper, lower, tighter, harder hitting, more powerful, more dynamic, just plain BETTER! It will allow you to Hear, Feel, & Experience Bass like it is truly supposed to be...PERFECT! Do your System & Yourself a favor...install the AudioControl EpicenterT Today!



the epic truth

thasnapper from mad county,in on 10/10/2010

the epicenter iz a subharmonic processor whut ever note it recivevez it putz a note one octive below that note!! meaning u can make the beatlez 1 cd bang like guccimane!! 2 really get tha best outta a epic u need a eq with a sub crossover with vari. freq, cut off i use tha alpine bbe then set the x-over at 100hz turn all andz below 100hz down 2 (-6) then play with it!! igot 4) 15" L-7 1 massive 3000 old school funk and 80'z soundz amazin in my trunk! and please get dynamat it makez me sound wicked when i ride by guyz in my hood love it!! WARNING if u got cheap or poorly engineered subz they will blow up!!



epic muzic

impressive Audio from Dallas tx on 6/7/2010

I have used the epic for about 14 years now it is a mager peace of any install I do if they wont mager bass but not only does it recovers bass but its also a line driver cuz most head units are 4-6 volts output to amp you can go inside and add volts directly to amp from 7.2 to 12.0 volt to give your amp maxx voltage output and a more solid frequincy and it also has ground isolations you can change for that unbearable ground noise O YEA it will dang near blow the trunk off if thats what you into I give it 10 thumbs up thanks...OGREDD



Restores low end

Old School from Florida on 2/8/2010

The epicenter is a vital part of your audio system if you listen to older (pre 1990's) recordings. It helps to restore the bass tracks that were removed by the sound labs. It works well to give a warm low end to cassette tapes, without sounding over amplified. I would recommend a subsonic filter at 20-25 hz.



The Epicenter® by AudioControl

Anonymous from Central Texas on 9/1/2009

I had one of these puppys way back when in 93' In a 85' Olds Cutlass Supreme Brougham. The bass that came out of those 10's with the 500 amp was unbeliveable, if I had the money to purchase another one of these I would gladly do so, the nob is so convienient and the effect is really noticable. Im glad to see the epicenter is still around and wish I still had mine....Thx Audio Control for the great memories :)




chip from lodi,ca. on 1/11/2009

Crutchfield Customer Review (What's this?)

I installed this little guy cause so much of the music i listen is old rock and it just didn't have that low end bass like the new rock has ie: dio, aerosmith, led zepplin, montrose but this thing is amazing just a litttle turn of the knob and wow it is whole different song. i cant believe the difference it has made, so if your sick of listening to the only songs that bass on that cd try one of these and u will listen to all the songs, it works well on all music including rap and rock, thanks crutchfield.




Hands-on research

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 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

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

1 question already asked

Maybe you should look for a simple line driver and not a line driver/bass processor. [ KWANE  Feb 25, 2015 ]
in have owned three of these units ,it couples the bass,it will run at what ever range your amp or cross over is set for .chips are sold seperate .the factory chip goes well below the 33 herts it says it does from there under is more of a feeling than hearing anyway.i have never had an issue with product out the will turn even the finest subs into mush,use with respect.hope this helps Chris. [ justin  Feb 24, 2015 ]
The epicenter is designed to add bass to songs without a heavy bass lines. Do not sound great with songs that do. [ KWANE  Feb 24, 2015 ]
No they do not [ KWANE  Feb 24, 2015 ]