I now hear the second Ska album -Bands with polyphonic brass section - and I must say: the sound is very good. No excessive Basslastigkeit as described by others. No matter where you are, it's a nice, well-balanced sound. The bass solo was clear and pleasant ... And all this with such a flowerpot ... Fascinating.
The receiver with Bluetooth works from my Lumia 800 across the apartment and two doors. The coupling also has to work immediately.
The supplied battery I have not recharged and runs at full volume for 2 hours.