Jeremy A-H,
Thanks for your post.

For me, it's one of those cognitive dissonance things. It's really tough for me to imagine that the level of noise coming through an ID41 (an interface already optimized for noise rejection) from an ethernet data stream (already very low voltage and current) could have any impact on something like an 818 which has multiple levels of regulation.

That said, I wouldn't deny the validity of your experience (i.e. I'm definitely not saying it's a perception without objective reality driving it). As someone who swears by the perceived effect my Shunyata gear provides, I'm convinced that obscure sources of noise plays a part in what we hear.

In this case, either I'm not getting it, or the cause is something else.

Great discussion

Living room: 818v3, Parasound A23+, Maggie 1.6
A/V room: 861v8, DSP7200SE L/R/C, 4x DSP320 surrounds, ID41 + Roon, UHD722, Prime+PS