Mutronics MIDI Mutator

Mutronics Mutator Image

Most likely the best stand-alone rack mount stereo (two channel) filter, modulation and envelope follower unit. It has two great resonant filters with cutoff, envelope follower, and an LFO with 4 waveform types that can be linked or inverted. The Mutator is truly a great dance music machine. Run loops, synths, voice or entire mixes through this and filter them in stereo or dual mono. It sounds great!

The two filters are identical and totally independent of each other. The circuitry is analog too. The VCF (filters) have their own envelopes and there is a useful LFO for nice sweeping or pulsing effects. The LFO can also be MIDI synced to your music (it's a little tricky though).

There is a great implementation of MIDI control on the Mutator. Control the filter cutoff from your sequencer by hitting notes on the keyboard. That's it, the notes on your keyboard and the pitch-bend correspond to the different degrees of cutoff. There is no patch memory, but that's ok. The Mutator is a machine that's meant to be grabbed and played with live while either going to tape or live on stage. Filtering music for an effect has become very common these days and the Mutator is among the best machines for achieving this effect. It is THE SOUND used by Daft Punk and has also been used by Fatboy Slim, Future Sound of London, Depeche Mode, and Radiohead.

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7 Visitor comments
guillaume auguet
October 31, 2013 @ 6:40 am
searching for one, please email to
October 20, 2011 @ 8:40 pm
Does anyone know how to tempo sync the LFO pleeeease?
May 24, 2011 @ 3:50 pm
Originally designed and built by Nigel Bradbury of OOOD.
October 6, 2010 @ 12:26 am
Just got hold of this unit.Love the silky analog sound.Does anyone know how to Midi up the LFO?
random task
February 25, 2010 @ 3:20 pm
Hi I've had my mutator for a couple of years now, it is bloomin brilliant, thinking about it you can see how rare they are by the lack of comments, nobody wants to sell them ! ! The warmest sounds I've ever made with anything were by running a £2.71 casio keyboard through this beauty. It sounded warmer than juno pads . . I have the midi version so I get to do the wacky melodic filtering :) It can also produce the lowest and most bassy sine wave sub you'll ever hear - and you can play it with a midi keyboard! If you find one you should snap it up, they are awesome yet sooo rare, the full MIDI ones are going for at least £800 these days. But I would say that I love the Ohmforce filter FX just as much.. they pack a lot of wallop in a different way (yet they're purely digital) mmm these filters are making my mouth water..
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User Rating

Rated 4.06 (224 Votes)

  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - Stereo or Dual mono filter
  • Oscillators - None
  • LFO - 4 waveshapes
  • Filter - 2 24dB/oct resonant filters
  • VCA - Envelope Follower (attack, release)
  • Keyboard - None
  • Memory - None
  • Control - MIDI
  • Date Produced - 1996

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