After my iBeat from Trekstor Organix had been adopted after three months, I was not really a Trekstor buy more product. But the offer for the vibez 8GB was just too good so I got slammed.

And Zack! Rushed to the part is no longer, for the engineers among you SNR -> 0 So contact to Trekstor support sought and received the standard answer "... unfortunately we can not exclude that their machine is broken ..." then sent back to the dealer.
Today is now just after four days time, a new vibez eingetrudelt with me and what can I say? Nu-noise ratio is finally in the technical data is specified at Trekstor, reached at least subjectively.

My conclusion:
mp3-player.de respect went so fast for a long time no longer exchange.
Trekstor : Give more time for QA finally out. Can not really be that it is a matter of luck whether a device is operating to or not.