Sorry for my late reply to this. I have a Samsung with Win 8 64 and an HP laptop/Win 7 64. I have not once had this happen. I do notice a slight hiss on certain recordings once in a while. This is specific to that file or source material though. Nothing on my whole music or movie library. 00sweeney, DO you use any other audio programs to process your audio permanently before DPS is enabled? Only thing I can think of. Maybe all of your music library has this hiss at low levels before DPS? Let us know.