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Aphex Exciter Aural Exciter and Optical Big Bottom  

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Legendary professional audio enhancement

Since its introduction in 1975, close to a million Aphex Aural Exciters have found their way into recording studios and broadcast facilities, nightclubs and concert halls, arenas and airports, musicians’ and DJs’ rigs and houses of worship. The Aural Exciter’s patented technology has been often imitated but never duplicated.

Each of the Aural Exciter’s two independent channels feature Tune, Harmonics and Mix controls, enabling you to focus on select frequencies just like an EQ. But unlike an EQ, the Aural Exciter’s harmonic processing doesn’t boost the signal’s output level, maintaining a clear and balanced sound.

Traditional EQ increases the output level of the targeted frequencies. Adding EQ to boost selected frequencies typically results in a perceived loss of other frequencies, which are then also boosted to compensate. The Aural Exciter’s patented technology harmonically brings out the desired frequencies without adding gain. The result is audio that’s more balanced, more articulate and, simply put, better sounding.

Over three decades of research, development and refinement have kept the Aural Exciter at the cutting edge. The new Aural Exciter and Optical Big Bottom features the same no-compromise audio quality Aphex is known for, with the highest quality componentry and rugged, durable construction to withstand the rigors of travel and constant use.

Aural Exciter
For more than 35 years, the Aural Exciter’s patented technology has been the audio professional’s secret weapon, a powerful way to improve and enhance sonic quality more naturally than with equalization.

For individual sounds or entire mixes, the Aural Exciter brings out detail, clarity and imaging that elevates your sound without adding level. For vocals and spoken dialog, it can dramatically increase intelligibility. For individual instruments, it adds punch and presence. And on mixes, it adds power, presence and sparkle. The Aural Exciter is the ideal solution for breathing life into MP3s and other compressed audio files.

Optical Big Bottom
The Optical Big Bottom adds a deep, powerful low-frequency punch, without the unwanted level boost that comes from adding traditional EQ. Deeper, more resonant bass response with tighter articulation helps to extend low frequency power and spectrum without the build-up or driver-damaging tendencies of bass EQ.


Recording, Mixdown and Post Production
The Aural Exciter was born in the recording studio, and its legacy is founded on thousands of legendary recordings bearing the unmistakable Aphex sound. Engineers and producers have used the Aural Exciter to bring out vocals and on instruments from acoustic and electric to eclectic and exotic. It’s at the heart of great sounding mixes in rock, pop, jazz, classical and every other genre of modern music. And you’ll find the Aural Exciter in TV and film post production suites the world over.

Broadcasting / Webcasting
The Aural Exciter brings clarity and intelligibility to spoken word and narration. For terrestrial and satellite broadcasters, the Aural Exciter provides the powerful articulation necessary to deliver crisp, clear signal in the face of today’s digital broadcasting challenges. For live and recorded Web streaming, the Aural Exciter adds the definition and dimension that’s so often lost in the compression of today’s Internet audio.

Live Sound
At Front of House, the Aural Exciter can help to bring out an individual player or add dimension to the entire mix, delivering an important tool for the challenges of changing venues and acoustics. Monitor engineers also depend on the Aural Exciter to improve clarity and articulation to monitor and in-ear mixes on stage without increasing volumes to dangerous levels.

Installed Sound
Ideal for adding intelligibility and clarity to challenging spaces and loudspeaker placement, the Aural Exciter can deliver audio clarity under the most demanding conditions.

In the eternal quest for more volume and more bass, the Aural Exciter delivers, while also addressing the need for brightness and definition without the use of speaker-damaging EQ. The Aural Exciter is a prized part of any nightclub or live DJ’s amp rack.


  • Professional two-channel audio enchancement
  • Elevates your sound without adding level
  • Improves sonic quality without altering equalization
  • Brings out detail, clarity and imaging
  • Adds a deep, powerful low-frequency punch with tighter articulation

Exciter Aural Exciter and Optical Big Bottom Specifications:

  • Frequency Response: 10Hz - 38 kHz (± 0.5dB)
  • Dynamic Range: 120 dB
  • Hum and Noise (unweighted 22Hz-22kHz): -93 dBu
  • Crosstalk (10 Hz - 22kHz): -79 dB
  • THD (10 Hz - 22kHz at max. output): .0003%
  • IMD (10 Hz - 22kHz at max. output): .0007%
  • IF LEVEL SET TO +4 dBu
  • Connector XLR-3F and 1/4" TRS Phone Jacks same
  • Type Transformerless, active balanced
  • Balanced 40k ohms
  • Unbalanced 20k ohms
  • Maximum Level +27 dBu
  • CMRR >40 dB
  • IF LEVEL SET TO -10dBv (-7.8dBu)
  • Connector XLR-3F and 1/4" TRS Phone Jacks
  • Type Transformerless, active balanced
  • Balanced 40k ohms
  • Unbalanced 20k ohms
  • Maximum Level +12.5 dBV (+14.8 dBu)
  • CMRR >40 dB
  • Connector: XLR-3M and 1/4" TRS Phone Jacks
  • Type Active balanced (may be used unbalanced)
  • Balanced 112 ohms
  • Unbalanced 56 ohms
  • Maximum Level +27dBu Unloaded; +25 into 600 ohms
  • Power requirements 90-250 VAC 50-60 Hz 12W
  • Dimensions: 19"W x 1.75"H x 8.25" D 1 Rack U (482.6mm x 44.5mm x 209.6mm)
  • Net Weight: 6 lbs (2.73 kg)
  • Shipping Weight: 9 lbs (4.1 kg)
Customer Reviews

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AphexExciter Aural Exciter and Optical Big Bottom

(based on 5 reviews)

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Reviewed by 5 customers

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(0 of 1 customers found this review helpful)


Aphex non-exciter!

By Bill

from Florida

About Me Professional Musician



      Best Uses

        Comments about Aphex Exciter Aural Exciter and Optical Big Bottom:

        Whenever I recieve a unit that allows a standard Hosa dual interconnect cable to easily dock in the back of the Aphex Exciter, then perhaps I can use it! Aphex dosen't seem very concerned about the poor quality of their components. So, when MF supplies my replacement I may have additional evaluation of this product. So far I'm NOT impressed, I expect something with QC equal to Yamaha, Lexicon and dbx..... not Behringer.

        Comment on this review

        (5 of 5 customers found this review helpful)


        You can't beat this

        By BigBud61

        from Butte, MT

        About Me Experienced

        Verified Reviewer


        • Clear Sound
        • Easy To Use
        • Powerful
        • Professional Functions
        • Versatile


        • Hard to find

        Best Uses

        • Amateur Recording
        • Events
        • Home stereo enhancement
        • Home Studio
        • Mobile DJ
        • Performances
        • Professional Recording

        Comments about Aphex Exciter Aural Exciter and Optical Big Bottom:

        I've owned this unit for two years. I had a phenomenal system to begin with.

        You just can't believe how much difference it makes until you turn it off. The sound seemingly falls flat without it. It is the single best addition to my systems that I've ever owned.

        Setting it up properly takes mere minutes and is well worth the effort.

        I've had DJ's and musicians to the house to audition this unit. Every one of them started a search to buy one.

        Buy one, you won't be sorry !

        Comment on this review

        (2 of 2 customers found this review helpful)


        Aphex Exciter

        Comments about Aphex Exciter Aural Exciter and Optical Big Bottom:

        Aphex Exciter the Best in Show! I play my records collection whit it and I am happy with the clarity and bass it adds to the music. Overall, I like this product and I highly recommend it to anyone who wants to enjoy a quality sound.

        Comment on this review

        (1 of 2 customers found this review helpful)


        Lives up to expectations.....and then some...

        Comments about Aphex Exciter Aural Exciter and Optical Big Bottom:

        Sounds great out of the box, before even fiddling with it.......great value for the money and solidly constructed. Makes a whole world of difference in the home studio.
        Just got it and have not been able to check out all the features....but like what I hear.
        Solidly constructed.
        Could not believe how inexpensive this was!

        Comment on this review

        (8 of 8 customers found this review helpful)


        Almost magical.

        Comments about Aphex Exciter Aural Exciter and Optical Big Bottom:

        Bought this to mike my drums for outdoor gigs thru a yamaha emx5016cf. Most powered mixers will run out of headroom when running drums through them for outdoors. 500 watts per channel just isn't quite enough include the drums. The kick and snare are the two that really cause problems. The Aphex adds SIGNIFICANT clarity and presence without keeping the levels at acceptible levels to not cause clipping.

        For kick drum use, it's almost magical. Chest pounding bottom end (with subs) and great articulation on the upper end. With virtually no messing with eq you'll have a great kick sound. Running the enitire drum submixer thru it also adds sparkle to the cymbals and great pop with just enough harmonics for the snare. I can't say enough about how good the entire sound is. After having one we bought a second to run the bass and lead vocal thru. For the bass, it also helps with clipping issues when running bass thru the PA

        All in all, It was either this or more power for outdoor gigs. This was a cheaper option and has so many more uses for day in, day out gigs. Indoors, we use it for the kick and vocals. It makes it easier to hear the vocals in the monitor without pushing the levels to cause feedback. On FOH it helps the vocals cut through the mix. It's like taking a heavy wet blanket off the speakers. You have to hear it to believe it. You won't accomplish any of this by eq alone, because the aphex does it's thing by adding harmonics and imperceptibly stretching out the bass, not by boosting levels.
        Just enough fine tuning but not too much. Simplicity in use at it's best.
        Plastic knobs, but so is everything these days. Built to last
        Don't even think about the Behringer knock-off. It's just not worth the nominal savings to do that. Go with the real thing.

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