@adsell
How Ethernet can make things worse (real mechanisms)
1. Conducted noise riding in on the Ethernet ground
Ethernet is transformer-isolated, but:
common-mode noise can still couple across
switch-mode noise from routers/switches can leak through
cheap NIC implementations are more susceptible
This noise can:
pollute ground references
raise the analog noise floor downstream
subtly flatten depth or harden treble
Got this from Chat GPT LOL.

