Ethernet Cables and Sound

I’m about to try the ER>DSDJr vs my macMini Matrix USB soon. :smiley:

I just got one of these it comes tomorrow. Interested to see if it makes a difference

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Okay, today my 8switch arrived. Fun.


I was hoping I would have some company!

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I did what @Aangen did in his system. I bought a router with an SFP (Fibre) cage and used fibre to connect my EtherRegen. Then on to a Roon ROCK server. I found a pleasant contribution to my sound quality. I had thought that I had maxed out the quality of my digital connections until I tried this. Total cost was about $150 Canadian.

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I have installed 2 Jcat femto network cards in my streamer and replaced the Crystec clock by an Pink Faun Ultra OCXO clock at one of the cards. Both Jcats are fed by a high grade linear powersupply (Farad). The difference in sound between the Jcats is clear, but even more in comparison with the normal Ethernet output of the streamer. I have done some measurements on the digital signal. I think I have some clear differences now to show.

This picture is from the router with a switching powersupply. You can see how the signal is dancing around the baseline.

Another picture directly from the router. You can see how unsteady the horizontal lines are.

Here’s a picture from behind the Jcat with ultra clock and linear powersupply. I think it’s still not perfect but it’s clear how much better the signal is.

Another from behind the Jcat with ultra.

The difference in sound is to much for words. I will try later to show this on the analog output of my dac as well. See the analog signal from last year higher (sept 19)

Enjoy the pictures. :grin:

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Looking forward to that.

Thanks me too! This weekend I will try first to picture the same message on the standard Jcat Femto, than from the normal Ethernet port of my streamer, than from the AQvox switch and compare these with the modified Jcat Femto.

That link is also rejected by Norton Security.

Here’s a picture of the standard Jcat femto fed by a Farad. It’s hard to say, but I think the horizontal lines are a bit less good as with the modified Jcat and maybe a bit less steady

Here’s a picture behind an 100mbit optical adapter fed by a Farad. I think it’s dancing a bit around the baseline and it’s less stable. The optical network is behind an AQvox SE switch. The optical network is connected with my streamer, but this with a Cat6 copper cable


This is a picture behind the AQvox SE switch. It’s feeding the optical network.What I see isn’t much better than after the optical adapter. I think it’s less good, but the optical network already has a better start then a direct connection from the router

Here the same position as the picture’s above with the AQvox SE switch, but now with a netgear switch fed by a high grade linear powersupply.

My conclusion is that even the tiniest improvements of the digital signal has to our ears major impact on the sound. The differences in the digital signal seems to be small. The effect of a lineair powersupply is measurable. The effect of a better clock is measurable, but it’s very hard to point out the mearurable effect of a better ethernet cable. Still I think the differences of cables are easy to hear, but they are far less important to the sound than the good powersupply’s, clocks, opticalconverters, and switches.

Hope these measurements will help us understand the importance of a good digital signal to the sound!

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In my experience this is indeed the case, which led to an almost endless series of upgrades…

PF LAN-isolator, EtherRegen (UpTone UltraCap 1.2), AQ Diamond RJ/E into Melco, AQ Diamond USB to Matrix x-spdif 2 fed by upgraded Farad Super3 and AQ Diamond HDMI into the DS.

No regrets though, each and every upgrade was noticeable and the total result is more than the sum of its parts.

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Thanks for the measurements. They surely show some “digital” differences. By chance, did you measure the analog output of the dac, to see if/how such differences manifest themselves?

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