Manley Stereo Variable Mu® Limiter Compressor


Outboard effects unit.

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SKU: MANMSLCHP Categories: , Brand:

The MANLEY VARIABLE MU® LIMITER COMPRESSOR has been our best selling product for many years. It is one of the very few compressors that has become a real standard in Mastering studios and contributed to most hit records over the last decade and probably the next. “Mu” is tube-speak for gain, and Variable Mu® is our registered trademark for this limiter compressor. It works by using the “remote cut-off” or re-biasing of a vacuum tube to achieve compression. The precious vintage Fairchild 670 also uses this technique and is one of few all-tube compressor to do so, that we know of. Even the side-chain has glowing rectifier bottles. How’s it work? The unique 5670 dual triode is at the center of the peak-reducing and compression action constantly being re-biased by the vacuum tube rectified side-chain control voltages which cause this tube to smoothly change its gain. Just like that.

Additional information

Weight 23 lbs
Dimensions 23 x 18 x 9 in




Channel Count



Threshold, Attack, Recovery, Output


3.5 x 13.5 x 19


23 Ibs

Rack Spaces



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