Recently I bought the amazing Axe FX II guitar processor. Coolest piece of guitar gear I ever had! Plays well with a foot controller.
But on the Axe forum, people were looking for an amp style extra controller for quick manual adjustment of sound. Lots of experiments and support for the idea, but no fully working box yet.
Guess what: damn easy with midibox NG. Processor, DIN, six encoders (more if needed), scrutinize sysex specs and BINGO!
Some pics and the config file.
DEFAULT.NGC.zip
PM me if you want more info