That's a good point - that hadn't occurred to me. EMI in the range from 20kHz - 40kHz would be inaudible added to the analogue output, but jitter at that frequency could intermodulate with the digital signal to produce audible distortion. For example 25kHz jitter can produce 10kHz noise when a 15kHz signal is being played. (Note that jitter >40kHz has no effect, assuming 20kHz is the threshhold for human hearing.)
For this to work as an explanation you need the EMI from the switcher to be concentrated mostly above 20kHz, which isn't consistent with the measurements in the thread Skunk linked to. But still, it's an interesting idea... what DAC do you use? Thanks for the interesting comment. -- opaqueice ------------------------------------------------------------------------ opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234 View this thread: http://forums.slimdevices.com/showthread.php?t=32231 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
