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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9 Reviews

  • 5
    Way cool

    Posted by Nathan Wagner on Aug 26th 2020

    This thing is the I love the customization I get and I love the dynamic pedal identifiers.

  • 5

    Posted by Bob S. on May 19th 2020

    The GT-22 is an excellent piece of gear - well engineered. Its only limited by your imagination. It takes a min to get oriented but once you work through some of the menus its very intuitive. Nice work RJM!

  • 5
    Mastermind GT 22

    Posted by Matt on May 30th 2019

    Top of the line hardware, software, and support. This thing does it all and is so well thought out. Worth every penny.

  • 5
    GT22 with Axe-FX3

    Posted by Adrian Grobler on Apr 14th 2019

    I was a little nervous about stepping away from my MFC101 with FASLink (which anyone can setup/configure) and taking on the GT22, but I was very very surprised at how easy the GT22 has been to setup with my Axe-FX3. RJM have managed to simplify the setup so that anyone can do it, whether you are a MIDI expert or not (I'm in the latter group). I managed to program my GT22 to do more than my MFC in less than an hour of switching it on!
    The workflow of this machine is absolutely brilliant! I have played live with it twice and it gives me so much more confidence whilst playing because there is less to 'think' or 'worry' about when on stage in front of a large crowd - you have so much control at your feet.
    The build quality is great, it feels like it will last a very long time (as long as you don't spill a beer on it)!
    Product support via the forum and direct messages with Ron have been outstanding, I feel very looked after and yet I have't had to ask too many questions as it was so easy to understand.
    I am very, very pleased with my purchase, it is definitely worth the extra money!

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