Many times it’s the quality of the digital dac , and corresponding ,Ethernet hub,
like a uptone ether regen , at decent cost ,or the much Much better still synergistic research that’s 3 x as much ,you need very good quality usb cable I spent $1500 on a final touch audio Sinope ,but anythjng over $500 is respectable ,the most musical usb under $800 the Final touch audio Callisto ,which I have in my 2nd system. from Lampizator also worth every $dollar
Ethernet cables at least decent quality ,minimum at least $200 on the input
on the end point is what counts most around $1k for a Ethernet cables
as the adage goes hav3 no weak link in the chain.