Ok, the looper sounds good and clear although the drums are a bit robotic but passable.
Problems start with fiddly operation, having to unplug, press buttons and restart to set start modes is a joke and not worth the hassle anyway.
The tap tempo works ok but the tempo detection is, quite frankly, appalling. Play a slow blues, it sets a frantic rhythm that is impossible to play to and you cannot then adjust. There is no other method of setting the tempo. Why they couldn't just allow the BPM to be set manually, I do not know.
As for the "timestretch" feature? Don't bother; it's painful.
Not being able to save whilst playing is a pain and you have to stop to change memory banks, even in the preset select mode. In fact, you seem to have to press stop to carry out most tasks.
Also very annoying that you can't seem to start an overdub in the middle of a bar. I wish the drum machine could be turned off to allow some tempo free looping but it can't.
None of this is helped by a very poor, rather baffling manual download.
It's a shame as, when you can get it doing what you want it sounds good and is solidly built, although it is nowhere near good enough for live use.
All in all, for the price it is very disappointing and is likely to be returned.