I talked to my colleague, Russ, who designed the Looper algorithm about what else we might have overlooked. He wondered whether you might have changed that cable connections and put it in stereo mode and in stereo mode it is possible in some cases to case some phase cancellation issues… If you're going into the Looper mono in and then mono out, you need to make sure that you're going into input 1 and out output 1…
Similarly, if you changed the way that the Looper is connected in your rig, i.e. if you put it in an FX loop that's not 100% wet, that could also potentially cause phase cancellation problems that would make your guitar output quieter…
Another thought was that there's a filter know on the Looper… Some filter positions could make your guitar noticeably quieter but you did say that you don't think the parameters on the Looper changed at all…
