Manley Variable Mu Mastering Version

Stereo Tube Compressor/Limiter with Detented Steps and True Variable Gain
Write review Item ID: VariMuMaster
Manley Variable Mu Mastering Version image 1
Manley Variable Mu Mastering Version image 1
$5,175.00
Sweetwater Savings: $575.00 MSRP: $5,750.00
Special Order
Special-ordered from Manley and usually arrives to you within 1-2 weeks. Please note: special orders cannot be canceled or returned.
Note: While most of the items we sell ship for free, this item does not qualify for free shipping due to special circumstances.

Share this with your friends:

Most popular accessories & related items...

Manley Variable Mu Mastering Version
Special Order

An Industry-standard Mastering Tool

The Variable Mu Mastering Version is the perfect addition to any professional mastering facility. In fact, since its introduction, it's quickly become an industry standard mastering tool - and it's the limiter/compressor responsible for an incredible amount of hit records over the last decade. The Manley Variable Mu Mastering Version's detented switches let you easily dial up or log favorite settings. Likened to "pouring a bowl of sweet cream over a mix," if you're looking for the ultimate in mastering weaponry for your pro sound armory, you'll find it in the Manley Variable Mu Mastering Version.

Manley Variable Mu Mastering Version at a Glance:
  • Behaves much like the vintage Fairchild 670
  • Premium switches, for logging and recalling settings

Behaves much like the vintage Fairchild 670
The Variable Mu uses a compression/limiting technique similar to the beloved vintage Fairchild 670. As "mu" means gain, the Variable Mu Mastering Version offers true variable gain by constantly re-biasing the unique 5670 dual triode at the center of the peak-reducing and compression action, allowing the tube to smoothly change its gain. The Variable Mu Mastering Version offers a soft-knee 1.5:1 compression ratio while its limit mode is sharper knee, starting at 4:1 and moving to 20:1 when limiting over 12dB. The knee softens the more limiting is used. To achieve more sounds, you can creatively use distortion by turning up the input and turning down the output while minimizing your use of compression.

Premium switches, for logging and recalling settings
Unlike the standard Variable Mu, which uses smooth-moving pots, the mastering-dedicated Variable Mu Mastering Version offers detented steps. This way, you can easily log your settings or recall them. The steps are built with 1% metal film resistors on sealed gold-contact Grayhill switches.

Manley Variable Mu Mastering Version Features:
  • Detented steps using 1% metal film resistors on sealed gold-contact Grayhill switches
  • Manley input & output transformers with pure nickel laminations in mu-metal case with flat frequency response
  • 20Hz-25KHz frequency response
  • Balanced Inputs & Outputs
  • Fully differential all-tube circuitry using one each 5670, 5751, 7044, & 12AL5 per channel
  • Independently regulated B+ and Heater supplies
  • Hard-wire Bypass switch
  • Silent conductive plastic input attenuator
  • Recovery 5 steps: 0.2s, 0.4s, 0.6s, 4sec., 8sec. (Not a 12-step recovery)
  • Variable Attack: 25msec-70msec
  • Continuously variable Threshold
  • Switch for Limit or Compress modes
  • Front-panel mounted Meter Adjust
  • Limit (4:1 to 20:1) or Compress (1.5:1)
  • Large Illuminated Sifam Meters
  • Stereo Link Switch
  • Maximum gain: 35 dB
  • <0.1% THD @ 1KHz Noise floor: -85dB typical
  • Max. output +30dBm (26Vrms) 26dB Headroom
  • Power consumption (120/240VAC): 80 watts
  • Dimensions: 19" x 3 1/2" x 10" (occupies 2U)
  • Shipping weight: 23 lbs.
The Manley Variable Mu Mastering Version is an industry-standard mastering compressor/limiter!

What Does "Special Order" Mean?

A special-order product is one that we don't normally keep in stock. We order it from the manufacturer as soon as you order from us. We have great relationships with all the manufacturers we carry, so we can get your special order to you as fast as or faster than anyone else. Remember that special orders are non-returnable and non-cancelable, so make sure the item is right for you. A Sweetwater Sales Engineer can help you decide — call (800) 222-4700 for assistance!

Additional Media

Signal Processing Buying Guide
New in Stock at Sweetwater

Tech Specs

Number of Channels 2
Controls Recovery, Output, Threshold, Attack
Ratio LIMIT: (4:1 to 20:1) or COMPRESS: (1.5 to 1)
Frequency Response 20Hz-25KHz
Inputs 2 x XLR
Outputs 2 x XLR
Rack Spaces 2U
Height 3.5"
Depth 13.5"
Width 19"
Weight Shipping Weight: 23 lbs.
Manufacturer Part Number MMSSLCHP

Customer Reviews

Be the first to review this product.
Write your review
See also: Compressors, Manley, Manley Compressors / Limiters, Manley Mastering