Yes, im using the 4.73b drivers.
I switched Audio Deck from "2" onto "Hi Sample Rate Digital Out" and then tried "KS : Envy24 Family Audio (WDM)" as foobar output with resampler DSP enabled and set to 96000Hz. Still only got white noise. Same story with using "DS : Envy24 Family Audio (WDM)" with no resampler DSP enabled. All I get is white noise from this socket it seems :/