Am completely satisfied with this system. Both the login via WLAN and Bluetooth function properly. At full volume it always pays great (for my taste) tones. As a surround sound system for films on Blu-ray or DVD, they will also work with no problems. The only and smallest Mankerl what I had found at the beginning (that is, the rear speakers were even quieter times louder than the rest of the speaker.) Was that harmonized the rear speakers not quite the volume of the other speakers. However, this has to a system Update changed and the volume can be regulated as normal. Therefore also no star deduction. From me, saying an absolute buy recommendation for this product.