Ben Diss;191022 Wrote: > > To test this, I had played my favorite test track, Hotel California, > through the SB3/Elpac/Lavry and asked my wife to randomly unplug and > then plug in the power supply from the wall. We did this ten times and > I could not tell the difference in any test. >
Yes, thats the kind of test I was thinking of. I think you've just confirmed your finding! > > To go one step further, knowing that I have very clean power and a dead > black background I played a test track of all zeros representing > silence. I turned the volume up all the way and as usual I heard > nothing, absolutely nothing. I plugged in the stock SB power supply > and I heard no change. > I'm not so sure about this test - I think it demonstrates that, in your system, there's no noise from the PSU getting in after the DAC stage. There is at least a possibility, however, that the (remember they were subtle) changes reported by some people are in the digital domain, inducing jitter for example, which might have the affect of altering the quality of audio without changing the "blackness" of the background. > > Thinking about this some more I wondered if the RF interference might > be a problem for some systems and not for others. Personally I think we've seen enough reports to have a decent working hypothesis here - there are plenty of systems, including yours, where a linear PSU makes no difference at all, and there are others where the PSU noise is having some sort of effect. Ceejay. -- ceejay ------------------------------------------------------------------------ ceejay's Profile: http://forums.slimdevices.com/member.php?userid=148 View this thread: http://forums.slimdevices.com/showthread.php?t=33986 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
