Quality parts, very fast setup of expr pedal function, musically useable, beautiful upper octave, very very good tracking, latency not noticeable. Expr pedal works fine, useful for lower octave swells, you can decide on the fly how much you want to load your speakers. Even -2 sounds relatively stable. Noticeable click sound when switching on, nothing at switching off - I use it always on, anyway, with an expr pedal on heel position, and blend my wet signal as needed, so no problem. The Focus pot is important, does radical changes, needs to be set right for your -1 octave - you can set a fat warm sound, or with more mids, have a growlier one. The 5th is sweet as well but I don't need it. Never tried the Pitch Mode. 6 stars out of 5.