With Ethernet the most influential for sure is at the end point or where the Ethernet hub Isand the hub very important also forthe money the Uptone audio ether regen
is a great buy , I use the AQ diamond ad a end point cable ,and the very nice a bit Warner Final Touch Audio ,which BTW make excellent usb cables like their Callisto
and top Sinope . Digital is very picky ,I had a Wireworld starlight which is excellent for $200 but not even close to the others above yes the AQ diamind is $1k retail
but refines the signal.