Steve,
Totaldac Server/Reclocker, which is an ARM based mini computer running RT Lenux I think, with optimized power supply. This feeds the reclocker (in same chassis) with a USB Cable jumper. AES/EBU output to the DAC.
The NAS and Server are on the LAN ports of the router. This is all controlled with MPD software using Mpad App on Ipad. No homerun Ethernet or internet required.
The Ethernet cable going from NAS to Router is less important than the one going from Router to Server IME, but there is still an improvement even here, with the better Ethernet cable.
The better Ethernet cables provide much greater image focus.
Albeit, this is not as great a difference as different USB Cables make on a USB DAC, but the difference is really there.
Routers make a difference also! Belkin seems to be the best and most efficient here. I have Hynes supplies running the NAS and Router (12V) and the difference these made was unbelievable.
I use the Belkin AC1200 DB, and the Qnap HS-210 Dual Bay Fanless NAS with Crucial M550 1tb SSD's
So it all still matters I am finding, at least with this setup, but once dialed in, it has been quite revelatory for the sound here.