Is it possible to ENTIRELY switch amp settings on the Peavey XXX using a MIDI footswitch (EQ, Gain, etc.)? I can use THIS cable to be able to use a Behringer FCB1010.
In short....No you can't. That will only allow channel switching.
Call up someone like RJM Music and see if their AMP Gizmo can give you an added degree of functionality (for the effects loop), but there's no practical way to use Midi to adjust your amp settings
OK, but most importantly, is it possible to switch between clean and crunch on the Peavey XXX 40 EFX? This amp has 2 channels, Ultra and Rhythm (clean/crunch). On the Rhythm channel, there's a switch that switches between clean and crunch. On the regular XXX footswitch, you can only switch between Ultra and Clean/Crunch, but not between Clean and Crunch. Is there a footswitch that allows me to switch between these two?