This plugin is included in our new MEGA Bundle Subscription at no extra cost!


For the first time, the supreme tycoon of compression and all its power is available in all major native formats.

NEW: Enhanced by Brainworx with added External Sidechain, adjustable Internal Sidechain Filters and onboard parallel Mix (Dry/Wet) capabilities.

We are thrilled to welcome to the Alliance the godfather of dynamics control, the Shadow Hills Mastering Compressor.

Meticulously modeled by Brainworx after the legendary hardware, no details have been spared when crafting the digital version of one of the most musical and versatile compressors out there. A well known staple in the industry, the Shadow Hills compressor easily tames even the most unruly and chaotic transients with flawless tone and control. It’s no wonder that it has been the go-to buss compressor on timeless records by Radiohead, Foo Fighters, Beck, Green Day, Coldplay and countless others.

Dual compression sections for unprecedented dynamic control

One of the key things you can do with the Shadow Hills Mastering Compressor is treat your signals with dual-stage compression, dialing in compression either through the Optical or the Discrete sections - use both for maximum musicality! In the Optical section you will find the traditional Threshold and Gain settings, with a two-stage release time that is similar to the one you find on an LA-2A. With this section you can easily shape your dynamic range and bring up the overall level. In the VCA Discrete section you have a more exacting control over the ratio, attack and release settings, which easily allows you to fine-tune the compression response to fit a large variety of material.

Switchable output transformers for sonic variety

Further tonal character can be built with the three unique Output Transformers. Here you can toggle between each one to easily shift the tonal balance of the compressor. Choosing between Steel, Nickel or Iron will help the compressor add distinct flavors commonly found on a few legendary consoles. Nickel offers smooth lows with a polished top end and sounds great on more subtle and sparse recordings. The Iron transformer has a more colored sound but still maintains a pristine high end with a small boost in the 100Hz range. It operates through a Class-A output stage that applies only even-ordered harmonic distortion, leaving you with a very musical sound. Finally, the Steel transformer has an extremely detailed and fast response with a subtle boost in the 40Hz range which contributes to a rocking low end.

Brainworx Plugin Only Features

To round out the huge features that came straight from the hardware, Brainworx went a step further by adding a Parallel Mix control, a Sidechain Filter and an External Sidechain option in the proprietary toolbar! The Sidechain filter can easily prevent frequencies below the setting from triggering the compression for ultra-tight sounding mixes. Try the Shadow Hills Mastering Compressor now to experience a whole new level of dynamics management.


  • Exacting emulation of the original Shadow Hills Mastering Compressor and approved and endorsed by Peter Reardon – the founder of Shadow Hills Industries himself.

  • A selection of three different types of output transformers - Nickel, which adds a nice top end sparkle. Iron which adds a little character in the mid's, and Steel which adds additional harmonic distortion.

  • separate Optical and Discrete compression sections for two-stage compression techniques.

  • Stereo and dual-mono modes

  • BRAINWORX Plugin Only Features added to the Toolbar:
    • Parallel Mix

    • Sidechain Filter - 20Hz - 666Hz (continuously variable 12 dB per octave high pass filter)

    • External Sidechain

Audio Examples

Industry Reviews

  • Greg Wells

    Greg Wells

    Producer, Mixer, Songwriter and Multi-instrumentalist

    I`m mixing at least twice as fast as I ever have, and the mixes sound completely on par with the best mixers out there.

  • Brad Divens

    Brad Divens

    Linkin Park, Enrique Iglesias

    Live and in the studio, Shadow Hills Mastering Compressor lives on my master buss. I won’t do a mix without it.

  • Lucas (Luke) Pimentel

    Lucas (Luke) Pimentel

    Producer/Mixer/Engineer/Songwriter (Warner Bros. Entertainment, Universal Music Brazil)

    This has been my bread and butter whether I’m mixing or mastering. It is not a transparent sonic tool. There are plenty of boring boxes out there :)

    However, it will not be invasive… Read More

Customer Reviews

  • MIxBus King

    by Mchangani
    This is the most versatile Bus Compressor in the Plugin World! Sounds Amazing and it does what I ask of it! The minute I tried out the demo, I knew this would be a great investment! It compliments my… Read More
  • Awesome Compressor

    by Cleon
    When I looked at the demo I thought I would only use one of the flavours, but after using it I end up using all three flavours. It just gives me what I need. I wanted this plugin natively for years.… Read More
  • Such Power / CPU Friendly

    by Tory Grey Music
    Not much to say here. Original code with some additional functions make this unit a solid 5 start top-tier signal processor.
  • Smoothness & Glue

    by Dave C
    Up until now, my go to Mastering Compressor was the wonderful SPL Iron. This superb unit adds a subtle but glorious dynamic and beautiful sheen to the music. The Shadow Hills has a different but no… Read More


Supported Plugin Formats
AAX DSP, AAX Native, AU, AAX AudioSuite, VST2, VST3

Supported Operating Systems
MacOS 10.9 through 10.14
Windows 7 through 10

Intel CPU only (minimum 2 GHz recommended)

Intel-compatible CPU with SSE2 instruction set (Pentium 4 compatible or higher; minimum 2 GHz recommended)

System Requirements
Display resolution: 1440 × 900px or 1280 × 960px or higher
Memory: 2 GB RAM


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