- How long have you use it?
2 weeks
I was fed up with never hear me sing .. it changes your life!
It's really a good investment because, in addition to singing well understood, it protects the eardrums!
Are two input / output XLR independent fully transparent (1 input jack on the receiver: for how wired, or wireless + mode) that way you can hear the scratching and / or the instrument from the rest of the group + of his voice.

- What is so special that you like most and least?
most: simplicity maddening, sound quality!
the least (very shame for the price): all plastic, no box to store all (just a cover for the receiver and headphones)

- Have you tried many other models before buying it?
no, I only consulted full view of pros and amateurs.

- How would you rate the quality / price?
is a very good product, while still very expensive!
Thomann bought 569 euros.

- With experience, you do again this choice? ...
Yes, it really is a blessing when one is tired of rotten returns.
However I would have liked to try a cheaper model to see if the price is really justified, but it is impossible to find in a store trying.