Fully endorsed and approved by Mäag Audio. Modeled by Brainworx.

The original MAGNUM-K™ hardware is a single-channel Compressor built to complement the audio engineer’s craft. It is comprised of two serial compressor sections (MAGNUM COMP and K COMP), a very musical Parallel EQ (with LMF and Mäag's signature AIR BAND®), plus a Soft Limit (soft limiter).

In cooperation with Brainworx this design was turned into a convincing plugin, whereas the concept was taken to the next level. BX added L/R and M/S Stereo capabilities, injected 20 different, analog channels utilizing their patent-pending TMT (Tolerance Modeling Technology) and several convenient plugin-only features like M/S Stereo Width, Mono-Maker etc.

Whether putting the finishing touches on a 2-mix or making a vocal sound bigger than life without taking your head off; the MAGNUM-K will help elevate your craft.

Welcome to compression nirvana and sonic bliss. Welcome to the Mäag Audio MAGNUM-K Compressor where bigger sound, quicker workflow, and outstanding control were designed to help you achieve your audio goals.


The MAGNUM-K Compressor helps quieter sonic signatures become as big as you want them to be while simultaneously reigning in those louder, more dominant tones.


Tuning a MAGNUM-K Compressor is quick and easy, reducing your overall workflow time.


The MAGNUM-K offers outstanding control from its transparent INPUT ATTN (attenuator) and INPUT GAIN controls, to its SIDECHAIN capabilities and MAKEUP GAIN. 


The Mäag MAGNUM-K offers 20 different channels, made possible by TMT.

TMT takes the real-world tolerances of audio components found in audio circuits into account and offers various channels of analog audio which have realistic variances in frequency response, time constants in dynamic sections, etc.

TMT is the same ground-breaking technology that can be found in the console emulations by Brainworx (SSL 4000 E & G, for example).

The result is digital audio that sounds as analog as possible, whereas even the L/R channels of a stereo instance will react slightly different, giving you wide and realistic analog sound in your computer! 


  • 2 compressor sections, Magnum Comp and K Comp
  • Musical-sounding parallel EQ with LMF and Mäag's signature Air Band
  • Soft Limiter
  • Faithfully modelled, endorsed and approved by Mäag Audio
  • Stereo version in addition to the original mono version
  • DRY/WET parameter for parallel mix
  • 20 different, analog  TMT channels
  • M/S mode inclusive Solo M and Solo S

Audio Examples

Industry Reviews

  • Dave Pensado

    Dave Pensado

    Grammy Winning Mix Engineer/Host of Pensado’s Place (Michael Jackson, Kelly Clarkson, Christina Aguilera, Beyonce)

    The MAGNUM K plugin is a true Innovation in dynamics. Modeled after the hardware of the same name it is a necessary piece of gear in every engineers rack. The plugin version also has MS, width and… Read More

  • F. Reid Shippen

    F. Reid Shippen

    Death Cab for Cutie, Backstreet Boys, Disney

    The MAGNUM is the miracle for your mix buss- the perfect high/low end eq and a limiter to die for... i can’t imagine not using this forever.

  • Andy Bradfield

    Andy Bradfield

    The Magnum K is as Butter smooth as the EQ4 that went before This is a mastering plug in that would be equally at home on a drum bus or vocal chanel I thought it wasn’t doing much - then i… Read More

  • Ralf Hildenbeutel

    Ralf Hildenbeutel

    Producer / Artist / Musician

    The Maag Magnum K immediately worked for me, I used it on a stereo mix as well as on busses, the “opening” effect was great and the mix got really big. As a fan of Maag´s EQ’s, especially… Read More

  • Audio Militia Studios

    Audio Militia Studios

    We love the depth we can get in M/S compression and that typical Maag weight and Sparkle we can add with the EQ .Brainworx have done it again another beast of an emulation with flawless detail.

Customer Reviews

  • Gamechanger

    by Ted Clayton
    The Mäag Audio MAGNUM-K compressor is a tool that I see myself using in practically every mix moving forward. The level of control and character this plugin has is unparallel. Compression is… Read More
  • Magnum-K

    by MrB
    Great,great and great, so good tool in any situation
  • One of the best

    by BBB Man
    I rarely review these things, but I had been wanting for a pair of the hardware version since they came out. When I demo'd this, I bought it that day. I have racks of very nice outboard, and since… Read More
  • Simple Clarity

    by Jweyerbacher
    I like placing the Magnum-K on busses. It helps to glue multiple instruments and vocals together with subtle compression. The EQ can be used to add weight and/ or air when needed. The other features… Read More
  • Maag Audio = good

    by cabanasbeats
    This is a huge plugin!! Cpu heavy but is so great for crafting your sounds. Having Airband is always good. I also own Maag Eq2 & Maag Eq4


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


With the Installation Manager, you can select, download and install just the Plugin Alliance products and formats you need for your system.



Maag Magnum-K - Changelog

Version 1.0 (Jan 22, 2019)
- Initial release