Unlike my old music system I hear finally back bass and treble. So as not always having to burn CDs, I wanted a system with a USB memory stick. Now I can on the stick folders with different styles of music, either for the whole drive or select individual folders in mode "Random". I have only 4 stars vergegeben because the manual leaves much to be desired and the menu system is a bit cumbersome. But if you have it figured once, it is no longer a problem. The docking station for I-Phone I do not use and therefore can not judge. Conclusion: The system has a very nice, subtle sound and I would buy them again at any time. Delivery and packaging of Amazon - as always optimal.