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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Extensive compressor reviews and FAQ. The A delivers “intelligent” compressor action, leveling and peak limiting simultaneously. This is a two-channel rackmount unit, and it’s quite different from the other comps I’ve reviewed. No Longer Available Update Location close.

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In Stereo mode, the user can choose between linking only the leveling control signals or linking both the compression and leveling signals. There is no rolloff of the lows, and the highs only roll off a bit at the highest compression settings.

I think the A version is discontinued, only available used. 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.

Copying is prohibited, but please feel free to link to this page using the link text “compressor reviews”. When you listen, you know the levels are made more even, but you don’t perceive the levels are shifting. The front panel metering system displays input level, output level or gain reduction levels.

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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The stated purpose of this processor is to normalize match the 320x levels of low-level and high-level incoming signals. In mono mode, unit provides two completely independent channels of processing.

You don’t hear pumping or other audio artifacts, just natural sound that is evenly consistent in loudness. Its unique circuit design actually enhances transient qualities, thus making even heavy processing undetectable. Overview Tech Specs Gallery Downloads.

Aphex USA Compellor A Compressor Leveler Limiter Rackmount | eBay

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. Write a review fvzqbyxqudwyaxxu. See any errors on this page?

Whereas with the more even-output bass, with steadier playing, it was fairly easy to find a clean, natural-sounding, noiseless setting. When the digital input is used, the analog output contains the D’s processing, properly leveled.

No other aphsx can match the performance of the D. With the active, the automatic levelling functions were trying so hard to regulate the signal that the noise level would jump up and down, and playing that B string hard caused a lot of cimpellor. 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 ocmpellor. The tone is copellor transparent.

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


I used it with two basses: When the analog input is used, the digital output contains the D’s processing. Update Unrecognized Zip Code.

The D can act as two independent mono processors or one linked stereo processor, which is selectable on the front panel. Patented control circuits include analog computers that continuously analyze the input signal, and vary the control characteristics to provide for virtually undetectable operation, regardless of compellof dynamics of the program.

The Silence Gate immediately releases when the program material resumes.

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. Aphex builds products that last and last without need for repairs or calibration.

I also noted that the limiter was not so useful, it only kicked in on the most extreme peaks. Enter new zip code to refresh estimated delivery time.

Reviews 0 Write a review. So it’s ideally suited to broadcast work. It doesn’t generate any noise of its own, although like all compressors it can amplify existing noise at higher settings.

The patented technologies within the D are totally unique. The A is then ready to provide complete dynamic control – smooth, inaudible compression, increased system gain, desired program density and the freedom from constant “gain riding” – all performed automatically.