The BDP-S1100 from Sony is its idea a wonderful entry level model without a lot of unnecessary features: it can play Blu-Rays and read USB sticks. However, there was at the 2 models (first model and Exchange Model), which I had in the hands, a big disadvantage. During playback, the drive volume was absolutely heard, the device is, however, sometimes in off mode a very loud, high-pitched squealing of itself, makes impossible the more relaxed usage. Maybe I was unlucky, but maybe it's a series error, both models went back, too bad ...