Ian, are you saying that connecting an ID41 to a gigabit switch is better than direct into the router? Is it due to the RFI or EM from the wifi signal?

I currently connect my ID41 to an old Linksys WRT54g router (wifi disabled) used as a switch. It's only 10/100 and I'm think of replacing it with a gigabit port switch. Do you reckon any improvement?

System: ML 53, ML52, Revel Salon2
Source: ML512, 818v3, Control:15, Apple TV
Cabling: Transparent Audio Ultra speaker and interconnect; Opus power cord
Others: Meridian F80