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  #11  
Old 01-15-2023, 12:56 PM
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Here is something else worthy of sharing. Hearing is very personal, and subjective. When I replaced my standard Ethernet switch, and upgraded the last end of my Ethernet 1.0M cables feeding my (4) Kaleidescape Movie Servers, I was dumbfounded.

How in the world can such a seemingly worthless upgrade change the image so profoundly on my 120” screen.

I don’t have any answer, but when you can see and hear the difference; I’m sold!
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Last edited by Masterlu; 01-20-2023 at 11:15 AM.
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  #12  
Old 01-15-2023, 01:35 PM
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Quote:
Originally Posted by Masterlu View Post
Here is something else worthy of sharing. Hearing is very personal, and subjective. When I replaced my standard Ethernet switch, and upgraded the last end of my Ethernet 1.0M cables feeding my (4) Kaleidescape Movie Servers, I was dumbfounded.

How in the world can such a seemingly worthless upgrade change the image so profoundly on my 12” screen.

I don’t have any answer, but when you can see and hear the difference; I’m sold!
It's because, unlike applications that are sending a file to a printer, streaming music or video is a completely different application with different requirements and as such, different functionality is required. Functionality is mediated by transfer functions; the simplest way to express this is Y=f(x). And transfer functions, in the real world, where we all live, are susceptible to the influence of noise factors.

In science and engineering, a noise factor is anything that "shifts the mean" (or other appropriate measure of central tendency), adds variance, or both, to a functional response.

The quality of content "streamed" from a servier (e.g., a music or video file) is very susceptible to a number of noise factors, including low- and high-source impedance leakage current, threshold jitter, deterministic jitter, common-mode noise, ground-plane noise and last but not, least, phase noise.

It's almost important to know that noise does not "reside" down low at the "baseline" of the signal, it rides ON TOP of signal, as shown in this graphic of phase noise.


All of these factors are percievable by our brains, which BTW, can distinguish timing errors in the picosecond domain, and this is the reason high-quality digital music devices require femtoclocks.

Regading the importance of audio-quality Ethernet switches, Hans Beekhuyzen has a very informative video linked here in his review of the SOtM Ethernet switch:
https://youtu.be/48oepwZgYRw

He also has an accurate and informative review on the sound of switches here:
https://youtu.be/BbRF8z8dQFU

Why is why Ivan's comment, highlighted in bold above, is correct.
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Last edited by Puma Cat; 01-15-2023 at 01:48 PM.
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  #13  
Old 01-15-2023, 03:03 PM
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Speaking of why switches matter, I just came across this video by Hans Beekhuyzen speaking on this exact subject...

https://youtu.be/B-StTplQZys

Hans does an excellent job diagramming and depicting why switches matter for audio applications.
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  #14  
Old 01-20-2023, 10:15 AM
Famester V1 Famester V1 is offline
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Quote:
Originally Posted by Masterlu View Post
For anyone that would like to visit me in Cape Cod
I will try again this summer!

Last year, I was having issues with my streaming Tidal.
During my attempts to correct this,
I swapped out my fairly expensive Cisco switch for a run of the mill switch I had leftover from my last house.
The drop-off in SQ was significant.
I quickly reinstalled my Cisco switch

Last edited by Famester V1; 01-20-2023 at 10:20 AM. Reason: added comment
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  #15  
Old 01-20-2023, 04:47 PM
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Quote:
Originally Posted by Famester V1 View Post
I will try again this summer!

Last year, I was having issues with my streaming Tidal.
During my attempts to correct this,
I swapped out my fairly expensive Cisco switch for a run of the mill switch I had leftover from my last house.
The drop-off in SQ was significant.
I quickly reinstalled my Cisco switch
Hi Fred,
I you ever want to upgrade from your Cisco switch, I'd recommend the SOtM sNH-10G with the sCLK-EX clock board. You can also use it's SFP ports if you want to run LC/LC optical fiber from the server to the streamer or endpoint (and you should, if possible, because optical sounds better).

Cheers!
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Last edited by Puma Cat; 01-20-2023 at 04:50 PM.
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