I don't know where to begin with this marvelous gizmo. The adjective “unlimited possibilities” would be a start. Just fooling around with the 99 Presets is a nice introduction. I’m not nearly qualified nor prepared at this time to offer a comprehensive review of the myriad potential of the algorithms under the hood of this thing, but right out of the box, the controls are intuitive enough that my luddite caveman brain was able to navigate and select enough of the EQ bank(s) to affect a number of the Presets to my liking. Although pricey @$600, i can’t think of anything that comes close to what the pedal does, or can do. To call it a Reverb Effect doesn’t do it justice. I imagine most players would view reverb as an effect most suited to guitar, but the ambience offered here struck me as a fretless player to be quite pleasant. This thing is extraordinary. The online Pdf is exhaustive, but not necessarily foreboding. A lot of thought went into making this an intuitive tool. Highly recommended.