Most interesting...I am a big fan of Waversa which goes in between the Transport and DAC of the Zanden now. I am soon to be trying these LAN Jitters since the Zanden uses RJ45 for its i2s connections.R&D Update #3 - Improving the LAN cable
Unfortunately, certain cables do not and will never lend themselves to being large gauge and so QSA treatment on cables like this will have limited impact. With LAN cabling, because of the limitations of the design of RJ45 connectors, 23awg is about the largest wire you can use and that is the largest wire we have found. However, the connectors themselves can be quite large and so we tested a few variants. Blue Jeans Cable CAT6 UTP cables utilize Sentinel connectors in their standard configuration which BJC really like because they consistently allow their LAN cables to meet full bandwidth and with every LAN cable BJC makes, they provide measurements confirming this. As nice as the fancy and more expensive beefy metal connectors look, BJC claim they don't always measure well but since full CAT6 bandwidth isn't that crucial for audio, they went ahead and made some cables for us with much more expensive Belden REVConnect RJ45 connectors (both shielded and unshielded).
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Once again, it was quite shocking to hear the uplift in SQ after treatment. The improvement was not subtle. It would be fair to say at least double the performance. I have not yet heard the new Spectra LAN cable that @QSA-LANEDRI is now marketing. This is being made for them by Sablon and Anas says they sound even better with far more density and so my curiosity is piqued.
One piece the Spectra Sablon "Combo" Ethernet cable comes with that I do have experience with is a Horn LAN Jitter and this little device is remarkable:
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You basically place it "before" your LAN cable and if I am to be honest, it is a flavoring. For those who are absolute truth and transparency seekers, you might find yourself finding this device not to your liking and so you have the option to not use it but what I find this little device adds in my system is a heightened dose of "you are there" realism. It expands the sound field as if you've added vacuum tubes into your system and it's like your speakers disappear. I would never use them on their own or "after" the LAN cable because they soften transients but when used before the LAN cable, the combined effect is synergistic and can be magical. Holographically expansive, ethereal, saturated but realistic tone, non-fatiguing, supremely dynamic, and with tremendous presence. As much as I like to classify myself as a transparency seeker, I cannot get myself to remove this device from my network.
I understand there is Crystal, Standard and Horn (which according to QSA are in order: ultra transparency, analogue/warm, vintage tube sound). I am going to be trying 3 LAN Jitters from their Crystal and Standard lines (not their horn line which it sounds like you have good experience with and like). More to come. Thanks for posting...very helpful to read about your experience.