Whistles highly disturbing during playback ...

as described in the other reviews: high-frequency, annoying tone. Sometimes increases with higher number of chapters a BluRay on, but may be constant.
Even with loud up representative 5.1 system the sound is perceived.

For me, unfortunately, the reason to return the device and wait for the successor to the Sony offer in stores will.Oder the manufacturer to change in mid-April.
Too bad, because the image operation and remote control of the small player to forget top sind.Nicht low power consumption.
Another annoyance for me: although bought as a new device, I got probably a return device which may have been times when Sony service.
Indicators for: second package label on the original box from Sony, which shows that the device was only delivered immediately after my order from Sony at Amazon (although it was available during the ordering according to Amazon)
clearly subsequently coiled power cord / open carton and stored queries in one of the built-in Internet access portals.
So I had not imagined it.

Would keep the players happy, but the whistling noise can not tolerieren.Schade.