Aphex Cx 1 Compressor Expander

Posted : admin On 1/26/2022

The Aphex Exciter technology was inducted into the TEC TECnology Hall of Fame in 2013. See all Products. An Industry Standard. For over 40 years, Aphex has been at the heart of professional audio: recording and broadcast studios, radio stations, live events and installed sound. It is a proven staple of top artists and bands, from. Mono compressor/limiter. Mono compressor/limiter; can be linked for stereo operation. Uses proprietary High Frequency Expander to preserve high frequencies from heavy ratio compression, and Spectral Phase Refractor to restore bass clarity and punch. The Aphex 661 Expressor™ The Aphex 661 is a neat 1-rack-unit mono compressor with a couple of interesting wrinkles. I've had chance now to run it through its paces and use it on a variety of recordings. To cut to the chase, it works really well and merits your serious consideration.

Aphex Cx 1 Compressor Expander


Aphex carved a niche in the signal processing market, first with the Aural Exciter, then with a series of superb levelling / compressor units including the Compellor. These are super-transparent units with no discernible “sound” and they’re built to the highest standards

At the heart of the Compellor is a VCA controlled by a sophisticated sidechain. Proprietary Aphex algorithms control gain reduction to give simultaneous levelling & compression. Compression uses short time constants to work quickly & inaudibly and levelling operates over longer periods to maintain average levels. The two strategies keep peaks under control whilst maintaining a consistent output level

Aphex Cx 1 Compressor Expander Tool

Compellor controls are unlike ordinary compressors. The Drive and Output controls are detented and allow the amount of processing to be varied while keeping the output at the same level. Process Balance moves the system between Levelling and Compression and there’s a slow / fast rate switch to change time constants. The two processes can be stereo linked. There’s a stereo enhancer and predictably, from a broadcast-oriented company like Aphex, the Compellor has perfect mono compatibility with no odd phase changes

In a studio setting the Compellor is confusing at first. It can be difficult to hear it working but a quick flick of the process in / out switches makes you realise what it’s doing. It’s not a “grabby” unit that imposes its own sound on the signal, it’s more of a “glue” compressor, better suited to buss compression than drum tracks. On a bluesy song with a very sparse intro, I found the Compellor would pull things together nicely without killing everything when the drums kicked in. It’s not an instant attitude box like a Valley People Dynamite, or punchy like an SSL buss compressor, but it’s a great tool to glue things together. I’d like to try it in series with an SSL compressor

Aphex Cx-1 Compressor/expander

Like all these Aphex units, the Compellor is beautifully-built and has a quality feel. The internal layout is well-organised and components are high quality. These are not built down to a price like 99% of outboard gear