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Dizengoff Audio D864 Rack Mount Varimu Compressor


The D864 is a rackmount Compressor based on the Federal AM864 vari-mu compressor

Dizengoff are quickly building a reputation for creating impressive recreations of classic studio gear with a Chicago twist and at a more affordable price point than trying to pick up an original. The D864 is no exception, fitting the essence of the AM864 into a sturdy 2U rack unit.

Like many vari-mu compressors, The D864 has a slow transient response and musical compression style that makes it a fantastic tool to glue your mix together and give it a bit of all tube colouration and character.

Whilst staying true to the essence of the original with the same 6SQ7 Tube used in the original Federal unit, the D864 design has also been updated to match the demands of the modern producer. As a result it offers a range of new features that make it a versatile tool in the studio.

Upgrades include variable attack/release as well as ratio, threshold and input trim controls. What's really cool about the D864 are the Growl and Glow tonal colour options that offer a bit of bite or some alternative saturation to your mix when needed.

Here's what Dizengoff say about the D864

The Dizengoff D864 Varimu Compressor is based on the classic Federal AM864 vari-mu compressor.

Varimu compressors are known for their musical compression behavior.  While they can be finicky, once mastered they are wonderful tools.  The D864 is not really a beginner's compressor.  While it doesn't thump, pop, or otherwise swamp like many varimu compressors do, it does take a bit of time to master.  It sounds wonderful on a variety of sources.

We chose to base the D864 transformers on the much loved Peerless-Altec designs of the 1960’s.  These are very highly regarded for their signal quality to this day, and used examples fetch a premium.  We chose nickel-50 core material for good signal fidelity.

For feature set, we have added some extras not found in the original build.  For example: variable attack and release, as well as ratio, threshold, and input trim controls.  Additionally, we included switchable bypass, link, and two unique features — Growl and Glow.

Growl is a sort of parallel germanium compression that can be switched in and out of circuit.  It adds a nice, trashy edge to the sound.

Glow shifts the behavior of the output stage.  It gives a more mid-forward response by shifting the way the output transformer saturates.  This makes it a great tool for bringing out a vocal or snare crack within a mix.  It also seems to give a bit more 'glue' to tracks.

For the enclosure, we have designed a nice, 2U high all aluminum rack-mount case.  Metering is provided by a giant 2.55 round A-scale VU meter.  Knobs are Chicago Daka Ware, of course.

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