Bought and rather than A/B it, took it straight to a gig last Saturday night. Liked the "tone" button, but that's not the official reason I bought. Looking to add a voice to harmonies, as I am the primary backup singer now, new drummer is capable, but 3+1 band needs some fullness. Jury is still out on the harmonies, as I'm not sure it was really working (I set up the bass through the feed instead of as advised, the guitar, hoping for the root/harmonics to drive it) Set up the harmony button for "high" expecting 5ths or octaves. Will post more as I investigate... Saw a few old posts on "effects" category, but this seems like the place... Your comments welcome..