The system is certainly not for HiFi purists, but as a "jack of all trades" they done their job truly excel. Bought for 99 EUR, and the time I tested the system, they did their services smoothly. In particular, the integrated Bluetooth receiver works smoothly. If, for example with the mobile phone connected, the system then turns off, and then on again, the Bluetooth connection is automatically restored to the phone - clean, stable, and without a murmur.
Personally, I have sought but rather for a device that sound-wise sound deeper. One can here for 99 EUR in the light of the other features are not expected, but me is the sound then but important. The sound here was average, (5 are available) with the correct preset for the currently playing music sometimes even good. Nevertheless: For me, the part went back to Amazon.