Everyone knows about this pedal, so i won't describe what it does.
As awesome as it is, there are a few problems:
-the power supply that comes with the V4 is not practical to use...
-a switch to go from a mode to another, or at least between two presets would be a good addition.
they fixed the power supply thing i think.
anyway, this pedal is awesome you should give it a try. a lot of things to do