I've finished my ethernet cable trial. From Wednesday until Sunday, three cables were auditioned, for several hours daily, connected between the etherREGEN and my Playpoint streamer. All cables were 3-ft long or shorter:
https://audiosensibility.com/blog/p...8-Ethernet-Cable/p/380224641/category=4059160
https://audiosensibility.com/blog/p...able-***-New-***/p/322022400/category=4059160
https://www.amazon.ca/gp/product/B07WRX7YBZ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Yauhody CAT8 cables are dead cheap, but in previous listening tests vs. other CAT5e, 6, 6a, and CAT7 from U-Green, Monoprice, CableCreations, and even vs. Supra CAT8, I always ended up in the same place; with a full chain of Yauhody. I know someone who runs a 10Gbps system using this cable, so it is technically very capable.
Yauhody CAT8 has what I call a chocolatey tonal balance; great bass power but lacking a bit of definition, very good soundstage, loses a bit of detail due to its warmth, great PRaT and listenability. I know it's too warm to be accurate, especially since I added the etherREGEN, that's why I borrowed the Audio Sensibility cables from a friend. His system is much more expensive than mine and shows off the Audio Sensibility cables very well. He uses three Supra+ cables, one of which is 50 feet long, with a short Signature cable to the streamer. The Signature cable with all Yauhody was not good, even warmer than my all-Yauhody system. To better mimic my friend's system, I replaced all three upstream cables with Supra CAT8 and removed the LAN Isolator/filter, which was feeding the etherREGEN, for the remainder of the tests.
Supra CAT8 cable has some excellent qualities, but is flawed, IME. Soundstage is very good, detail is excellent, and it adds a bit of glossiness, which audiophiles tend to love. Treble is a little too bright, bass is very articulate but suppressed. The Supra+ cable has similar tonal balance, but is livelier, with better dynamics. Both versions lack bass heft, and with some music, a bit of ethereal quality lacking solidity, which disappoints me. What's worse is that I don't find Supra cable very musical. I find it fatiguing over time, at least in my system.
The expensive Signature cable was the winner in this shootout. It had all the audiophile goodies; smooth, great soundstage, micro detail, etc. Tonality was an oddity, because it adds an obvious bass kick, which goes a long way to making up for the reticent bass of the Supra cable. However, even with the bass bump, I could still hear some lack of solidity from the Supra.
I considered ordering the Signature, but I felt my system would be more musical without Supra, and I had one more setup to try. When I borrowed my friend's cables, I left him with a few cables so he could at least play his system when he returned from his trip. One of the cables I left him was a Tera Grand CAT7 like this one, except 18" long:
https://www.teragrand.com/products/...-feet-purple-blue?_pos=8&_sid=16618c888&_ss=r
I had used this cable several time previously and loved its superior midrange clarity and awesome bass definition, medium soundstage size, but the treble energy was always too much to handle, long term. Predictably, it was too bright using Supra upstream, pretty good with Yauhody. Putting the LAN Isolator back into the system upstream of the etherRegen brought the joy. Bass is tight and powerful, treble is revealing and appropriately controlled, midrange clarity is outstanding. I wasn't able to compare directly with Supra/Signature, but I am confident that Yauhody/TeraGrand is the sound for me.
The lesson I take from these tests is that
synergy with my system, and the other cables in the chain,
is paramount. Another expensive cable might be better than what I have, but could just as easily spoil the sound and require me to start over to find suitable upstream cables. I am no longer actively shopping for ethernet cables. YMMV, HTH.