Everything was great, until suddenly, for no apparent reason one of the audio-in connector no longer worked, and thus only a speaker could be operated. A few days later but actually a Alluminiumstück the second connector in the Audio-In port has remained stuck. Fortunately, this could be removed quite easily again.
I have about 1-2 times a week the cable audio-in jack away from and reconnected, just to give an idea of the use. Those who are perhaps not have any problems connecting the cable once and not frequently remove.