Ethernet cable? What kind?

For that small a cable run, the difference in price between Cat5 and Cat6 is negligible. No reason not to run Cat6. Cat6 will handle 10 Gigabit ethernet and, therefore, is more "future proof."

The options are cat 5, cat 5e, cat 6, and cat 6a.

The sweet spot is cat 6, rated for gigabit ethernet at least. Cat 6a is rated for 10 Gbps, although cat 6 might also be able to do it, but not guaranteed. Cat 6a is MUCH more expensive than cat 6.

Bottom line, get cat 6.

I assumed that your scratchy connection is wireless. If not, and you already have ethernet wires running that have a lot of noise, then consider shielded cable or cat 6a, or run them in a metal conduit.

Michael

You only need Cat6a to maintain 10gb/s for runs over 120 feet. Not worth it for most houses.

This is one of he most rational cable discussions that I have seen on Audiogon. 

we have the complete collection of ethernet cables: Cat5e, Cat6, Cat6A, Cat7. SF Cable is one of the best places on the internet for buying ethernet network cables as we offer our products at wholesale prices.

Blue Jeans  horizontal ethernet 6a cables

https://www.bluejeanscable.com/store/data-cables/index.htm

This should be on the cable thread.

If Audioquest makes an Ethernet Cable one can’t help wondering if it’s controlled for directionality? No, I’m not trolling. 🤗

For streaming, don’t even think of ever needing 10G. You won’t ever see an Internet Service capable of more than 1G in 20 years. CAT5e is all you need for 1G. Terminate solid core cable with jacks that are either installed in wall plates or surface mount boxes and use factory made patch cables. Use a proper 110 punch down tool and wire the jacks 528B.