Which Ethernet filter?

@wsrrsw , thanks for that.  I'd really love to try both of Uptone's ethernet and USB regenerators.  Could be a while though, I guess.

@lalitk .   Point taken.  I'll be feeding my Innuos Zenith mk3.  I already have a SotM ISOCAT7, so will be able to compare a compete LAN option against optical.

Thanks @jjss49

I hadn't considered optical as, for some reason, I was under the impression it was best suited to long cable lengths.

Is it as simple as feeding an ethernet from router to an optical module, then a short optical cable, followed by another optical module, and another short ethernet cable into my Innuos? 

Thanks again @jjss49 .  Looking at that bundle, it's clearly cheaper than many ethernet filter products out there, and I guess I can also incrementally upgrade the bundle at a later date

@audphile1 - I’m interested by your description of the sonic signature of optical, as I currently have a system which is a touch too warm, with overemphasised mid-range.

This is totally my fault as I selected the USB cable (FTA Sinope - warmish, enhanced midrange) when I had some ATC SCM19s on loan from the dealer. When my SCM40s finally arrived I realised I had underestimated the warmth they impart on the sound compared to the dry 19s. However, I plan to give the 40s and Sinope a thorough burn in, and then address the USB issue first. I might ask NA nicely if I can try again their Muon USB - which I had previously rejected as being too aggressive, detailed and forward.

I think next I will try a budget optical setup (links below) to determine if the sonic characteristics work well. And if they are then gradually upgrade the components. And if not, then have a chat with NA regarding their Muon and Eno systems.

I would add that I’m finding to very tricky getting the sonic signature correct. It feels like such a fine line between too bright and too warm.

https://smile.amazon.co.uk/TP-LINK-MC220L-Supporting-MiniGBIC-Modules/dp/B001GQDRWK

https://smile.amazon.co.uk/KOMQI-135501061-TP-LINK-TL-SM311LM-MiniGBIC/dp/B001800S6M

https://smile.amazon.co.uk/StarTech-com-Fiber-Optic-Cable-Multimode-BLACK/dp/B00015G9SG

https://smile.amazon.co.uk/dp/B08Y59FXDZ/ref=twister_B08Y5GRZR4?_encoding=UTF8&psc=1

I managed to find two old-ish TP-Link MC200CMs with cable and power supplies for £11 on eBay, and I think it might be the best SQ improvement I've ever made (even better than the speakers' Gaias).  The bass definition, dynamics and transparency have all gone up a level.

At the moment I have a 30cm Sotm dCBL-CAT7u ethernet into the Zenith.  I'll play around with different ethernet cables, and maybe reintroduce the Sotm ISOCAT7.  I've also got an Ifi iPower X on order for the 2nd MC200CM.

But wow!  Exciting times.  I can't see myself not trying a Sonore opticalModule when it becomes available again. 

Long story short - I'm sticking with the Eno having received it today.  Already it's clearly "just right".  The chaps at NA told me I'd hear a little more detail with the Muon, but that the sound signature would stay the same, so decided to draw this quite expensive odyssey to a close.

I think it's fair to say that the Eno is better than the ISOCAT7 (anyone want to buy a "pre-loved" one  ;-)  ).  I might still see some benefit in putting the Sotm between my stock switch and the Eno.  All opinions welcome.

@lalitk thanks for the feedback. Why is a 1 Gb/s connection advantageous? Surely Eno’s speeds are more than sufficient for even the most high-res streams.

Just checked their site.  They rate both of them at 100Mb/s