I'm currently decoding my digital music files via the SPDIF coaxial output of an HP Pavilion PC. It's on board audio is Realtek HD . I use the Direct Digital out configuration of Winamp. Also have Foobar and Media Monkey installed. The link to my Atlantic Tech T-400 processor is via a 25" length Terk 75 Ohm cable with M to M RCA to F connector adapters. This works fine and HiRez HDTracks decodes at 96K as indicated by processor's display. I've read about the advantages of asynchronous mode decoding and am considering the V-DAC. My question is: Is the SPDIF out as jitter prone as the USB without an asynchronous mode DAC? Or is the DAC in my processor controlling the timing of the data stream now? Bottom line: Will the V-DAC provide less jitter/better timing, ergo better sound than my present set-up? Also, which of my players will yield the best bit for bit transfer of my FLAC files? Winamp, Foobar, Media Monkey, or would you recommend a better alternative player?