Find great deals for Aphex USA Compellor A Compressor Leveler Limiter Rackmount. Shop with confidence on eBay!. The A delivers “intelligent” compressor action, leveling and peak limiting simultaneously. It can be used to solve audio level problems and improve audio. Great comressor/limiter unit, works well in the studio and live. APHEX COMPELLOR A RACK COMPRESSOR LIMITER LEVELER BROADCAST AUDIOFully.

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You might say a steady, level signal doesn’t need any compression, but the processed signal is much more “present” and “energetic” sounding than the dry signal. The D’s Frequency Discriminate Leveler section, with the Dynamic Verification Gate and the Silence Gate, slowly adjusts the volume level of an audio stream with very complex algorithms that hide its work.

You don’t hear pumping or other audio artifacts, just natural sound that is evenly consistent in loudness. 320q

320D Compellor

So right at the outset, this unit is capable of far more advanced dynamics control than most other comps, but it can also be harder to use since the controls are unfamiliar and non-concrete.

The Silence Aphes immediately releases when the program material resumes.

Overview Tech Specs Gallery Downloads. It can also take a sloppy instrumental or vocal track and regulate it all to the same level. In Stereo mode, the user can choose between linking only the leveling control signals or linking both the compression and leveling signals.

Aphexx is no rolloff of the lows, and the highs only roll off a bit at the highest compression settings. The tone is completely transparent. Write a review fvzqbyxqudwyaxxu. With the passive, this comp really brought out the sound in a punchy, articulate apphex, with nice clear harmonics, and no noticeable noise or artifacts. The patented technologies within the D are totally unique. Extensive compressor reviews and FAQ.

Enter new zip code to refresh estimated delivery time. Be the first to review this item. The A delivers “intelligent” compressor action, leveling and peak limiting simultaneously. Whereas with the more even-output bass, with steadier playing, it was fairly easy to find a clean, natural-sounding, noiseless setting.


Some Compellors have literally been in hour use in the same rack for a decade or longer! With some careful experimentation I was eventually able to find a setting that worked decently for the hard-to-control bass with a minimum of artifacts, but it took some time. See any errors on this page?

Aphex USA Compellor A Compressor Leveler Limiter Rackmount | eBay

320q connector on the rear panel facilitates remote relay bypass of the unit A Silence Gate feature detects significant gaps in the program material and freezes the processing, thus preventing noise “swell” or “build-up”, a condition commonly audible in other automatic gain control devices. All potentiometers are detented for accurate resetting of controls. The A is then ready to provide complete dynamic control – smooth, inaudible compression, increased system compellr, desired program density and the freedom from constant “gain riding” – all performed automatically.

I think the A version is discontinued, only available used. Copying is prohibited, but please feel free to link to this page using the link text “compressor reviews”.

On the other hand if your technique and signal are already fairly even, and you just want to enhance the punch and harmonics, and set your place in the mix, this is a good tool for that purpose.

So it’s ideally suited to broadcast work. By going beyond conventional design ideas, the D provides audio processing with unprecedented sound transparency, yet is exceedingly effective at controlling levels.

Playing irregularly–a few notes, then a rest, then a few more notes–also caused the automatic sensors to work overtime, which resulted in audible artifacts.

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The D can act as two independent mono processors or one linked stereo processor, which is selectable on the front panel. This is a two-channel rackmount unit, and it’s quite different from the other comps I’ve reviewed.

I used it with two basses: When the digital input is used, the analog output contains the D’s processing, properly leveled. The D’s limiter acts on peaks that shoot beyond average program levels so they are easy to handle by any analog or digital recording system. Not specified by manufacturer. So overall my impression is that this comp is a fantastic tool, which really does offer some valuable processing power and a super clean sound; but it is not well suited for use in any rig where the dynamics and signal peaks can vary wildly.


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Aphex USA Compellor 320A Compressor Leveler Limiter Rackmount

In mono mode, unit provides two completely independent channels of processing. It will try very hard to normalize an unruly signal, resulting in the noise level raising and dropping constantly.

It works differently at different frequencies and stops processing when the sound stops, then resumes instantly when the sound reappears, so there’s no distracting increases in program background noise.


It can be used to solve audio level cimpellor and 3220a audio signals in the broadcast or recording studio, tape duplication house, film-dubbing studio or in live sound applications.

I also noted that the limiter was not so useful, it only kicked in on the most extreme peaks. When you specify a Compellor, you know it will do its job flawlessly and give you peace of mind. Extremely easy to operate, the user only needs to set the Drive level to generate the desired amount of processing, set the Process Balance control between Leveling and Compression and adjust the Output level for unity gain.

The front panel metering system displays input level, output level or gain reduction levels. The A provides the option of Dual Mono or Stereo operation. Aphex builds products that last and last without need for repairs or calibration. When you listen, you know the levels are made more even, but you don’t perceive the levels are shifting.