Mastermind GT/22 MIDI Foot Controller

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  • Mastermind GT/22 MIDI Foot Controller
  • Mastermind GT/22 MIDI Foot Controller
  • Mastermind GT/22 MIDI Foot Controller




The Mastermind GT is the result of years of research and development, using modern technology to create what we believe is the best MIDI foot controller ever made. It's popular with guitarists, DJs, keyboardists, producers and more. The Mastermind GT series is very popular with Kemper and Fractal Axe-Fx users, and we're also seeing quite a few users running it with Ableton, Logic and other DAW software. 

By adding a display over every button, we've made it possible to have a fully configurable MIDI controller. Any button can be assigned to any function, and colors and button text are fully configurable by the user. Buttons can send multiple MIDI messages of several types, and there can be up to 16 pages of buttons so you will always have access to all of the functions your rig has available.

Add in other features such as user upgradeable firmware, USB thumb drive support and built-in support for many popular MIDI devices, and you can see why there has been so much buzz about this product.


  • 22 buttons, with an LCD display over every button. Any button can be set to perform any function (preset, IA, bank up/down, tap tempo, etc.) and the LCD will indicate what the button does. No more board tape!
  • A large main LCD display shows the preset number, preset name and/or song name
  • Standard MIDI In and Out ports, plus 6-pin XLR ports for connecting to our Rack Gizmo, Effect Gizmo and future products
  • Phantom power capability allows you to run the Mastermind GT with a single MIDI cable - no separate power supply needed
  • More than one Mastermind GT can be connected together and used in multiple locations on stage
  • Jacks to connect four expression pedals and four external switches allow for lots of control over connected effects processors and other MIDI devices
  • Two auxilliary 9VDC power outlets for tuner, wah pedal, etc
  • USB support for direct connection to a PC or Mac
  • USB thumb drive input allows you to save and restore settings to a thumb drive
  • Editor software for PC and Mac
  • Advanced on-board editing capability which makes this controller very easy to program, even without using the editor software
  • Built for the rigors of the road with high quality components throughout


  • Number of instant access buttons, preset buttons and bank size are all user definable - any button can be assigned to any function
  • 384 presets, 16 pages of buttons and 16 connected devices
  • Preset buttons can send a program change to all 16 devices with a single tap
  • IA buttons can send up to 10 messages (any combination of CC, PC or Note)
  • Expression pedal inputs: 4. Accepts linear or log pedals using TRS jacks, high or low impedance
  • External switches: 2 TRS jacks for a total of 4 switches. Momentary switches required
  • 7-pin DIN connectors for MIDI input and output
  • 6-pin XLR connectors for MIDI connections to other RJM devices
  • USB "A" connector for connection to a USB thumb drive
  • USB "B" connector for connection to a PC or Mac
  • Phantom power received over DIN and XLR MIDI output jacks
  • Dimensions: 19.4 (w) x 14.1 (d) x 3.25 (h) inches / 49.3 x 35.8 x 8.3 cm
  • Weight: 10lb / 4.5kg
  • Power requirements: 12VDC @ 2A, center positive, 2.1mm ID / 5.5mm OD barrel connector

For more information on this product, please visit our main website.

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12 Reviews

  • 5
    Great Controller!

    Posted by Neddi Stanz on Sep 29th 2022

    i needed a midi controller with a lot of presets and decided to pull the trigger on the Mastermind GT22 and so glad that i did! this unit is amazing! it has so many capabilities but i'm only using it for preset changes and instant access control - it took a bit to figure it out but once i did it was a piece of cake to program - if you want the best midi controller available i highly suggest the Mastermind GT22!

  • 5
    Mastermind GT/22

    Posted by Mitchell on Feb 24th 2022

    Finally found the right product AND the right company. The people are great and the Mastermind is exactly the board I was looking for. Looking forward to getting the Gizmo.
    Thanks Ron and Sheri

  • 5

    Posted by Larry (The LJC Project) on Jan 1st 2022

    Hands down the most versatile midi controller I've ever owned. And it looks awesome! Having owned the Voodoo Lab and even the Fractal MFC floor units, the GT22 exceeds my expectations in it's abilities. I'm not the most technically inclined with understanding midi, but after spending some time with the GT22 I started to get a handle on the programming. The benefits of that time spent are totally worth it. I've always been fascinated with RJM gear and the GT22 does not disappoint! Loving it!

  • 5
    Everything I need and much more

    Posted by Michael Mayo on Jun 3rd 2021

    What a powerful unit. I was initially thinking of saving a few $$, but boy am I glad I got the GT22. Quality equipment, updated to latest and got to customizing. Optional bundle pack recommended for common configs per mfgr i.e. Fractal so one for phantom power which has the unit, Xlr6 and midi7 cables - one with standard power using 2 midi cables etc.

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