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| Manley® VARIABLE MU® Stereo Compressor Limiter < Manley Compressors & Limiters < Manley Studio Gear < Home | ||
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VARIABLE MU® Stereo Compressor Limiter | ||||
| Description MANLEY's VARIABLE MU® LIMITER COMPRESSOR has been
their best selling product for many years. It's a unit viewed by many
engineers as a "must have" standard in Mastering studios and, as such,
has contributed to the sound of countless hit records over the past
decade.
"Mu" is tube-speak for gain, and Variable Mu® is Manley's registered trademark for the unit. It works by using the "remote cut-off" or re-biasing of a vacuum tube to achieve compression. The precious vintage (holy grail?) Fairchild 670 used the same technique and was one of few all-tube compressors to do so. Even the side-chain has glowing rectifier bottles. So how does it work? The unique 5670 dual triode is at the center of the peak-reducing and compression action and is constantly re-biased by the vacuum tube rectified side-chain control voltages causing this tube to smoothly change its gain. Result? Silky natural sounding compression. The COMPRESS mode is soft-knee 1.5 to 1 ratio while the sharper
knee LIMIT mode starts at 4 to 1 and moves to a more dramatic ratio of
20 to 1 when limiting over 12dB. Interestingly, the knee actually
softens as more limiting is used. A little creative distortion can be
acheived by turning up the Input and turning down the Output while
using very little or no compression. As one reviewer said of the VARMu® "It's like pouring sweet cream over the mix" Specifications
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