Features already mentioned.
Many factory sounds, and an indefinable number as they are fully editable!
A good effects section

UTILIZATION

Configuration not easy for a beginner .. but with the manual at hand we learn soon enough! this is my first machine and I have a good mid me today has managed to make a piece for my taste! The manual is well done but as I find another said "it has nothing to envy in the bible!" There are many functions so they are not always obvious to find, but the fact that there are many buttons on the face much easier!

SOUNDS

So I do the DUB! well sounds ideal to me! I insist because nobody had really talking about the dub! When I listen to the many pieces of jvois demos you can do very terrible things in hiphop, jungle (...) even salsa! Personally I was very pleasantly surprised by the realism of certain sounds!
The effects are effective for my taste (including effects such as "phase" terrible to put on the skank!
The expression is good
Knowing that the sounds are completely editable they can all be good!

OVERALL OPINION

I use it for some time but I am already very happy. I hope to see more good things in it!
I love all the knobs on his face! Ptite the mixer in the middle of her head with some mute! The envelope! The knob to boost the bass!
I tried several models, including the korg that I find absolutely zero sound levels, comparable to the groovebox, I restates that it is for the dub!
Knowing that I paid 200 euros OCCAZ 'I find the price / quality ratio TERRIBLE!
I think I do it again this time even more choices!