Mastermind GT/16 MIDI Foot Controller

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  • Mastermind GT/16 MIDI Foot Controller
  • Mastermind GT/16 MIDI Foot Controller
  • Mastermind GT/16 MIDI Foot Controller

Expected release date is May 28th 2024



 Waiting on parts - email as we might be able to make one earlier. 


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.


  • 16 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
  • 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
  • USB "A" connector for connection to a USB thumb drive
  • USB "B" connector for connection to a PC or Mac
  • Phantom power received over MIDI output jack
  • Dimensions:
  • Weight:
  • Power requirements: 12VDC @ 1.5A, 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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7 Reviews

  • 5
    Mastermind gt/16

    Posted by Travis Campbell on Mar 14th 2024

    Having no prior midi experience, I was concerned about being able to program this unit to control the my axe fx3. Initially, I used the basic template and had it running in minutes. This was very usable, but I’m picky and wanted a different layout. Rjm has a great series of instructional videos for the gt and the editor. After watching a few of these I did a full layout exactly how I wanted every button including expression pedals. Couldn’t be happier with my purchase!

  • 5
    The GOAT of MIDI Controllers

    Posted by William Song on Aug 4th 2023

    Literally THE BEST MIDI controller I've ever had thus far. The options are limitless in terms of how you can arrange the buttons, you can even program more pages if you want to (although I myself don't even need them!), and the construction is so robust that I feel like I could do a world tour right now with this unit and feel confident that it'll provide consistent results for a smooth live performance.

    Say bye-bye to tap dancing your way through effects with the GT-16. Even BETTER than the PBC-10 that I used to have before in terms of quality control too!

    Well done, Ron. I'll be sure to put this to good use.

  • 5
    Mastermind GT/16

    Posted by Sergio Monteiro Lima Junior on May 26th 2022

    This midi controller is absolutely fantastic! You can easily set up various presets. This is an essential tool for any guitar player that need control over many devices! RJM simply offers the best solution!

  • 5
    Mastermind GT-16

    Posted by Luis Eduardo Rodriguez Gonzalez on May 15th 2019

    A complete foot controller with all the features that I and probably any guitarist need

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