> Please illustrate the differences between these setups: > PC>Cat5>44.1k clock>low jitter signal>NON OS DAC > > PC>USB>USB receiver>low jitter signal>NON OS DAC > > The only difference I see is the short 75ohm RCA connecting the SB and > DAC. There are a LOT more similarities.
There is a BIG difference. See my second post in this thread: http://forums.slimdevices.com/showthread.php?t=19342 Current USB DACs like the Wavelength Brick rely on the builtin Windows driver for USB audio. That driver does isochronous mode transfers - a mode designed for really cheap implementation of USB audio rather than for high quality. No retransmissions over the USB bus and the USB DAC has to adapt to the USB bus clock in some way. You can put effort into working around the limitations but it isn't the best way to do things. The Squeezebox can do it right: retransmissions over the Ethernet, deep buffering and the word clock going into its DAC or out over the SPDIF interface can be generated locally. The jitter test results that Sean Adams posted are very good. Bill -- Listener ------------------------------------------------------------------------ Listener's Profile: http://forums.slimdevices.com/member.php?userid=2508 View this thread: http://forums.slimdevices.com/showthread.php?t=19367 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
