I have tried 3-4 times and had NO luck at all. I can plug any amp or device into my old Lexicon rack unit and easily get multiple options that sound good, pick the right one for the part and use it. The few times I've tried the one built in to my AA12, I usually last about 10 minutes before I'm back out of the editor and giving up, and then don't try again for at least 6 months. IMHO, this is one of those features they made way to complex, as some complain about with other features. I don't need 20 controls and can't, with no guidance, seem to make them work. Does anyone have any useful presets? If I can get a few that work, I can figure out what to do with the "other" controls. I've got a performance coming up soon where I need this feature. I tried last week and got nowhere. Plugged my Lexicon into the loop and got exactly what I wanted in seconds. I just can't take rack gear along with my Atomic for this song.