Reply to "Posh switch - another cause of Audiophilia nervosa?"

DaveBk posted:
Simon-in-Suffolk posted:
DaveBk posted:

Welcome thought... there's certainly no universally correct answer here, however I'm more inclined to keep the NAS away as I have no idea how clean it's power supply is. It's a QNAP TS-453S Pro, with 4 1Gb SSDs. I'm pretty convinced that any audible issues result from poor power supplies coupled through copper cables.

Yes, I'm sure issues occur from electrical noise with cheaper devices, but when you go to higher quality switches and/or fibre you still hear the benefit of reduced Ethernet transport clock jitter... Clock jitter is no stranger to audio SQ related issues... 

Yes, I agree in principle, but I would be interested to understand the relative magnitude of the effects. Just how much better is the clock accuracy on a professional switch vs. a simple unmanaged consumer item? How does this compare in terms of audible impact against the detrimental influence of a noisy SMPS?  Very difficult to compare, so I'm happy with my choices at present.

That for the most part can be only found by trial and error. Apart from some very specialist devices, transport clock jitter and electrical common mode  noise  is rarely quoted for Ethernet switches. I put the SQ differences in the decoding FLAC vs WAV category.... but if one is buying expensive Ethernet cables to my mind that made little sense if you were feeding it a poor quality Ethernet physical signal... GIGO.. and I think that is what started much of this discussion off.

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