Have decided to price reasons for this nonsense. After a few hours listening pleasure it began. When you turn you had to wait briefly until the sound was there, not so bad if it had not always used for longer each time. Eventually there was the hum to which then transformed the part in a veritable instrument of torture. At the end of the hum again wake but the music was unfortunately. I then again the volume turned up for testing purposes or simply out of frustration and hear there, it is still a sound out of the box. But is not important, because you can not hear anyway so music and the sound quality may not be designated as such. I may be other reviews conclude that these problems occured at mehreren buyers and no isolated case. A? Well, I can not recommend auser one has fun to rumzuärgern or you want a nemesis make a birthday gift for his risk of heart attack increases by 30% :-) No fun aside. Give rather 100 euros more, and buys you a normal stereo system from a real manufacturer, then I've also done so and has to me via the sacked money with A? Na annoyed but I can listen to calm music again and the sound is also better.