Well, as everyone has already mentioned, I will not go on, and that, this product is simple: a loop sampler controlled by foot, plus a USB port and the possibility of the map Compact Flash you want ... And the whole super strong, can jump on it without worry.
It only lacks sync MIDI and maybe a headphone output a bit more powerful.
Coupled with his pedals, it's a killing to live who knows to use it ... Anaïs Ben Ricour or are there to testify ...

UTILIZATION

Single product, well thought out ergonomics ---> use simplissimme!
You just read the manual to understand the logic of recording when there was a tempo at first, but otherwise, it just happens.
A big regret: nothing tells us that the loop is not saved before we can change the program, I did fuck a few times before I do!
On the other hand, it is primarily a tool for live, so this feature prevents to do things on the fly ephemeral ...

SOUND QUALITY

If this is an output volume is too low for my taste for my headphone, I find his nickel.
The pub on the manual loop tempos of "high quality" is frankly exaggerated, since it is pretty basic as a metronome, and more without having the opportunity to register (but the couple with a BAR and hop)

Plugged into a PA / amp, no problem, the sound that comes out is the same one that had just come back!
(Yet happy)

OVERALL OPINION

I use it for a month, with a guitar (acoustic or electric) and a microphone.
I bought it after the concert and Anaïs Ben Ricour 6 fours, especially Ben Ricour is a real killer!
I use it mostly for the moment "notebook of ideas" and working tool solos, riffs, etc ... and very soon on stage!

I am delighted, at least, no surprises.
If it again, I ask myself Digitech laying the same with:
-A MIDI sync
One-level Undo / Redo infinite or at least greater than 5 (there is one, and it is very light)
-The ability to play loops backwards as the BOSS pass'keu it's funny

I'm sure they will release it for version 2 ...