It's a MIDI keyboard controller with a ton of programmable knobs, it comes with some editor software to edit these knobs with up to 12 presets on it, downloadable on M-Audio's website, only available on Windows and MacOS. Here we try to reverse engineer that preset editor software…

There's 4 ports available:

amidi -l

Dir Device    Name
IO  hw:x,0,0  Code 61 USB MIDI
IO  hw:x,0,1  Code 61 MIDI DIN
IO  hw:x,0,2  Code 61 Mackie/HUI
IO  hw:x,0,3  Code 61 Editor

The last one in particular is used by the preset editor.

SysEx messages generally have the following format:

⇒ sent to keyboard

⇐ reply from keyboard

On Linux, try amidi -p hw:x,0,3 -S '<message>' -d

⇒ f0 00 01 05 7f 31 06 6d 00 01 01 f7

The LCD says SYS for a second

⇒ f0 7e 7f 06 01 f7

⇐ f0 7e 7f 06 02 00 01 05 31 06 31 30 34 34 f7

⇒ f0 00 01 05 7f 31 06 62 nn f7

where nn is a preset number between 01 and 0c, or 00 for RAM

⇐ f0 00 01 05 7f 31 06 63 0a 3b nn [xx xx xx xx xx xx] … f7

xx is a 6-byte ASCII preset name

⇒ f0 00 01 05 7f 31 06 61 0a 3b nn [xx xx xx xx xx xx] … f7

• https://github.com/ahlstromcj/midicvt/blob/master/contrib/sysex-format.txt