Modular synths for guitar effect I know this is possible, but I was wondering if it was a simple as I think. what I was thinking about doing is getting a doepfer a-100 case with 4 spaces, and starting out with just the doepfer a-136 wave shaper. I would run into the in and out the out, and later add in more modulators like a filter or ring mod which I know would require more routing, but for this one would I be fine. Also I would just get and a/b switch to choose to go to the synth or my board, and run in front of my and a/b selector backward the a is my guitar signal and b is the guitar through the synth. and is putting modules in the rack as simple as just popping em' in?