I bought this product after a watching and reading couple of reviews. I have to say and warn you, Don't trust that you can practice singing loud and your neighbors will not hear you as is advertise!!! There is some volume reduction, but very little, everybody can hear you, even in the next room, quite well, If you put a blanket over your head, you will achieve the same result and save almost 900 euro. This is my biggest complain about this product.
On the otherside, for a recording is it a quite helpful, sound is boxy inside,but you can easily fix that in postprocess with equalizer.The isolation is good, there are almost no reflections at all inside. That is the only reason why I didn't return it.
The built quality is ok, but for such a money they should use a metal zippers and not a plastic one. It is easy and fast to set up for one person, but not really portable, still quite heavy and big, definitely you will need a extra luggage if you travel by plane.
Overall it is a overpriced zipper foam, I don't reccomend this product for a home practicing at all, but for a recording it can make a big difference if your room is not enough acousticly treated.
