Yes a digital file is a digital file, but the volume, bass and treble can be controlled via windows and the 2150. When I disable my sound card the USB stops working. So I am somewhat confused as to where the digital to analogue transfere is actually taking place. I am almost certain it is the micronas chip in the 2150 but why does windows still maintain some control and given that it does should the windows settings be at maximum as you point out a digital file is a digital file so there is only more or less information is my understanding and the conversion to analogue is done by the receiver. So where in your opinion does one set the bass control on windows for example, at maximum or mid range.