After two weeks of using this chamber, I am very happy: the sound quality is good, and excellent power. In a small Paris apartment, I dare not simply go to the max for my neighbors! The music comes to Bluetooth, used with an iPhone 4S in my case. Pairing very easy and reliable, the only problem being when connecting after the initial pairing: I have to insist on two occasions for the iPhone connects to the enclosure and not another of my Bluetooth accessories (but I think it was an Apple problem?)
Otherwise the design is very elegant and discreet, with a certain resemblance to the Bose SoundLink III. At a price of less than 80%, I can only recommend :)