I'm interested in buildling a blend pedal. I was looking at the other "blend" threads, and one of the ones I'm interested in is the ROG (http://www.runoffgroove.com/splitter-blend.html), but I have a few questions about this circuit:
1. It looks more versatile than a simple blend dry/wet signal blender, since it has 2 parallel effects loops, so how would this circuit be used to just blend the dry signal with a single wet signal? I'm guessing it would be:
- Guitar -> In
- Send 1 -> Return 1 (to connect the dry signal)
- Send 2 -> Effect(s) Chain -> Return 2 (for the wet signal)
- Out -> Amp
2. Looking at the schematic, why is there a transistor placed before the OpAmp stage after the GREEN return, but not after the RED return? My only guess is that is somehow is needed for getting the phase inverting option to work.