Suggestions on Ethernet cables for Accuphase digital separates..

They do! And it’s very good and not very expensive. 

@garebear best thing to do is either contact the cable company and get few cables to try at home using their landing library, or buy used and lose a little potentially by selling.
If you don’t want to spend a lot, try Linkup cable from amazon. Solid build with excellent connectors.

I’ll add that I agree with you about the cable company as I had few bad interactions in the last couple of years but it’s still a viable option.

@garebear cat 7 or cat 8 doesn’t matter. RJ45 connections are standard. What matters is they don’t all sound the same and even if someone with the exact same components gives you a recommendation it will not guarantee your results with the same cable considering other variables such as the rest of the audio chain, room acoustics and personal preference for sound qualities. 
So I get you didn’t like my response and it wasn’t what you wanted to hear but it’s the reality. 

@garebear telegartner connectors are very nice. But the cable itself is also important. In example, I have compared Supra CAT8 with Telegartner terminations (available from Audio Sensibility) to Purist Audio Cat7 that uses “regular” connectors. The Purist sounds better to me so I kept it.
At some point I wanted to try the Audioquest Diamond that also uses telegartner connectors. But I draw the line on Ethernet cables way under that price point.

Supra Cat8

Purist Audio

@garebear the purpose the cable will serve in your setup is an interface between an SACD transport and a DAC.
1. It’s most likely a really short run.
2. You don’t have to deal with garbage associated with routers, switches and the wall wart power supplies that inject noise. Your connection is actually as clean as it can be.

Cat6, 7 or 8 should all be compatible. Comes down to how much you’re looking to spend to stop wondering if you could have done better. And if you hear a significant difference between the $360 Purist and a $3,000 Shunyata.

Also, from what I’m reading, GG45 connectors are comparable with RJ45. 

👍

Just edited to add that GG45 and RJ45 are compatible.