I guess I was hoping for the scoop, so as to understand the change.
I suppose the simple version, is that a rig with an OBEL guitar, doesn't need the additional boost from the Mu.
Please send the mod when you have a minute. I've gotta think through the whole thing. I was going to semi-permanently mount the Mu in my GCX SMS>Mc rack, but I like the sound through my little Mesa so much...I think it needs a home in both rigs. The GCX would isolate it anyway, so unless the Octave was additionally on, there wouldn't be much need. The little rig only travels with an Envelope filter & the Earth Drive....
If I could just find another cheap Mu...then...
"Hi Ho...the Carrion Crow...FoldeRoldeRiddle"