Read increasing reviews of the sonic benefits of an audiophile Ethernet switch.@kennyc - some time ago I got into a disagreement with (I actually forget now who it was) and it was over audiophile ethernet switches in fact.
Last I checked the $4k Telegärtner m12 network switch was at the top of the heap. Fortunately, there are some new audiophile Ethernet switches more wallet friendly.
It turns out he was very much correct about one major thing, using a high quality linear power supply with a reasonably well engineered switch will give optimum results and best bang for buck.
I put in the research, and discovered the other guy really knew his stuff. Humble pie was on the menu for me.
It's worthy of some due diligence.