So what happens when you feed back a reverb mod? how do you use it in music. do you need to play something through it first or will it just start feeding back? Finally added a few items to my website, including a diagram of the sort we've been speaking about. Until we get a diagram page on Looper's Delight, loopers may want to take a look there. Much simpler gear in this than others I've seen, but the idiosyncratic signal routings may be of interest.