Manuel clear (the little I've read). In any case the use is fairly intuitive.
The most part of radical effects of the type Sci-Fi are very "funny" but irrelevant in my case. I plug in a deluxe one Jazzbass on the little box that I use as a preamp, as I used a little reverb, modeling of the drum machine as a metronome, the tuner. Very funny as the fixation on the strap, I may lack flexibility, but can not read the signs in this position, as to the son who spent all ... For my part I prefer to fix the belt, finally, the idea from a good feeling.
I use it for 3 months on the road, with headphones when I am unable to plug in an amp. Then a Swiss Army knife. I've never used for anything other than personal daily work. It's a choice I do not regret for the services rendered, but the price is still excessive.