@mowntnbkr - welcome to the forum : ) - I’d say, room acoustics attended to already, just two in order of importance - 1.you need a grounding solution for your system. If you have a garden outside, this will entail sticking in a solid copper rod into a cylinder of marconite, and wiring everything to that rod by way of a grounding router. But even if you’re living in an apartment, grounding everything to a common ground with just lamp cord for cabling will give you the biggest delta of improvement you’d ever imagine. There are many proprietary solutions out there, but I’ve found Russ Andrews of the UK gives the best value for the dollar.
2.try replacing the hardwired ethernet cable between your router and server, with a TPlink wr902a pocket travel router that’s connected to your server/streamer with as short an Ethernet cable as possible. The WiFi air gap stops common mode noise from travelling the ethernet copper and polluting the signal chain downstream in almost all systems but a few odd ones which have very little noise pollution upstream. You’ll need a power bank to work the 902 for best effect.
These two changes will cost a fraction of what audiophiles typically spend on their systems.
in friendship - kevin

