Just bought a Cambridge Audio 851N V2 and am using a brand new Mac mini as a server.
Mac is currently attached to the 851N by a high quality USB class 2 audio cable so only seem to be able to stream music through the USB input on the 851N but can control Roon through my iPad.
Couple of questions - is this the best solution for sound quality or should I use an Ethernet cable? And if I use an Ethernet cable - will the artwork show on my 851N?
I definitely recommend checking out our documentation on Sound Quality, but generally USB vs Ethernet is for a certain device is very subjective — Definitely try them both and see what works best for you!