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  • Overview
  • Features
  • Customer Reviews
  • 4.8/5
    (295)
$299.00
4.8/5
(295)

Tube compression royalty for your mixes.

As Manley Labs' flagship compressor since 1994, the Variable Mu is a tube and transformer-driven classic that exudes hand-made craftsmanship. A gold standard among mixing and mastering engineers, the Variable Mu adds clarity and cohesion to stereo buses or your entire mix.

Developed under Manley Labs' rigorous scrutiny, the Manley Variable Mu Limiter Compressor plug-in is a thorough emulation of this legendary tube limiter, and is based on the coveted “6BA6 T-BAR Tube Mod” unit. Now, its famed sound is available exclusively for UAD-2 hardware and Apollo interfaces.

Add definition and fidelity to individual tracks, stereo buses, or an entire mix

Glue together difficult mixes with signature Manley tube compression

Link channels for a precise, perfectly matched stereo image

Select from Left/Right or Mid/Side operation for precise control of stereo imaging

Use the plug-in-only Dry/Wet Mix control to easily dial-in parallel compression

Mix with artist presets from Tom Elmhirst, J.J. Blair, Mike Larson, and more

Take A Listen

Take A Listen
Manley Variable Mu Under the Hood

Manley Variable Mu Under the Hood

While the Manley Variable Mu uses the remote cut-off style gain reduction found in the Fairchild and other classic limiters, it has a sound and character all its own. Its classic dual-triode gain reduction design is constantly re-biased by the sidechain control voltages, creating a unique variable gain compressor with stunning transparency. This lets you treat source material with velvety-smooth gain reduction, while infusing warm harmonic content, free of audible compression artifacts.

King of the 2-Bus

King of the 2-Bus

The Manley Variable Mu Limiter Compressor plug-in can be used on single instruments such as bass or a lead vocal, or on subgroups like strings or horns. But its raison d'être is on the mix bus, where its expert features can unify your mixes with a rich, hi-fi fit and finish.

Powerful Controls

Powerful Controls

Parameter linking allows simultaneous adjustment of both channels with stereo signals. When unlinked, the plug-in's Mid/Side processing is actually improved over the hardware, providing phase accurate stereo imaging. The High Pass Sidechain filter prevents compression to frequencies lower than 100 Hz — letting you compress, say, overheads, while retaining punchy bottom-end. Plug-in-only controls Dry/Wet, Mix, and Headroom give you more colors to paint your mixes. Dry/Wet Mix offers easy parallel compression — perfect for polishing vocals and more. Finally, the Headroom control lets you optimize the Variable Mu’s overall level to your playback system.

Key Features

Exclusively licensed and rigorously scrutinized by Manley Labs, modeled by Universal Audio
Transparent Variable Mu tube compression for master fader, subgroups, or individual sources
Models entire stereo stereo Class A circuit, including custom tubes and transformers, input gain and gain reduction
Continuous Dual Input, Stereo Output, Threshold and Attack controls with five position Recovery controls
Sidechain Filter, L/R or M/S operation plus plug-in only Dry/Wet parallel processing Headroom and Controls Linking
Requires UAD-2 DSP Accelerator Card or Apollo Interface, available from authorized dealers worldwide

Customer Reviews

Manley® Variable Mu Limiter Compressor

Overall Rating

4.8/5
(295)

W. Meis

February 16, 2024

A must have

A must have

A. Ayer

February 13, 2024

WOW. My mixes have never sounded this good

This may be the ultimate mix bus compressor. It sounds sooo great.

J. MESSORI

January 20, 2024

Essential for mastering !

The Manley® Variable Mu Limiter Compressor plugin has become a game changer for me. Perfect for mastering, colorizing the mix as needed, it allows me to get the sound I'm looking for.

J. Smith

January 14, 2024

Glue

I read many reviews about the legendary vmu. First thing I did was put it on the mix bus and immediately felt it. Highly recommend

L. PATRICK

January 14, 2024

Warm Sounding

This Mu has a very warm sound, that seems to help glue a mix together when applied gently across the mix bus.

s. ermolaev

January 7, 2024

Good!!!

Very good and warms my mixing

c. rosario

January 3, 2024

Powerful silky glue

Always great to have many tools and this is one of them.

A. Dahlback

December 13, 2023

Smoooooth!

Incredibly good-sounding compressor in every way!

d. neill

December 12, 2023

Smooth Operator!!

Great sounding compressor, glue's the mix together in a very musical way

b. romanini

December 10, 2023

Mu

Love this on mix bud

b. romanini

December 10, 2023

Mu

Love this on mix bud

R. DIAMOND

December 9, 2023

Legendary glue

Got this during Black Friday, couldn’t refuse it, already have this style of compressor and should have known UAD does it the best

J. Aguilar

October 16, 2023

Warm tube sound

I like how this help giving stable sound to vocals and instrument groups

D. Zamora

July 27, 2023

Bad Horsie!!

love it i am using it on my material! specially on drums for Magia Blanca! Dario DSA

W. Manke

July 10, 2023

Vari Mu? Very Smooth

Tape Op described this plugin as a warm hug for your mixes, and that is the perfect description. For those of us "mastering" at home for small projects and podcasts this is a perfect final touch to up the volume without squishing and to add depth and detail.

J. Mateo

June 28, 2023

smooth glue!

This thing is so smooth and easy to dial in. it gives things just a smooth hug that I love it on my mixbuses and my master tracks

R. Schuster

June 26, 2023

Amazing on the mix bus

Great for drums as well

B. Worrell

June 10, 2023

Great!

I bought this plugin looking for something to give my mix character. I demoed this and felt it had an amazing character that I dare say is now my secret sauce. The sound of it is, to my ears, unique and I've already placed it across several mixes to see how it performs. I'm happy to say it does exactly what I want it to and I can't wait to put it on several more mixes!

B. Byc

May 30, 2023

bobby byc

I love its character

B. Byc

May 30, 2023

bobby byc

I love its character