I figured that a lot of people stack out there, and I just saw the thread about the difference between a boost after/before distortion. Let this be a place where everyone can ask questions about stacking, and share their experience with stacking, their stacking settings, etc... I'll start: Right now I'm running Zen>KOT>Tim. I've got the Zen with the gain around 11. The KOT is set with distortion on red side, od on yellow side. The gain on the distortion is almost dimed, and the overdrive isn't far off. Then the Tim's gain is around 10:30. I haven't had a chance to play loud with the KOT yet, but we're practicing tonight, so that'll be the first time. I love the way that Tim stacks, makes just about everything sound better.