I am looking to get a DAC that has a higher output voltage then the rated input sensitivity of the preamp it will feed. I will be using Vista which has independent volume sliders per app. and which is a good thing for my problem because I will be able to set the max level in the app. slider and then I will be able to set Streetdecks slider to full without having to worry about over driving the inputs of the preamp. One problem I see is that Streetdeck plays threw WMP but the slider in WMP has nothing to do with the WAV output on Streetdeck in XP. This leads me to think that in vista Streetdeck will have no app. volume slider and will only have one volume control (main volume). Is this the case?