Pimping your router

@brenn : I have Verizon FIOS too, with the G3100 (Home Router), but I have no idea what the coax filter is. Are you talking about a Point of Entry (POE) MOCA filter? I doubt that will do anything for audio. Not sure if it’s necessary at all for anything, as you actually have fiber going to your FIOS ONT, not coax 

Another update:

I managed to insert a EMO EN-70HD in the ADSL link upstream of the router on the theory that galvanic isolation AHEAD of the router might be desirable to decrapify the incoming signal before it even travels in the Ethernet link downstream instead of directly before the switch.. Shazam! Significant increase in detail retrieval and soundstage. Never ceases to amaze how much fine tuning is needed on a proper digital link.

Looking at purchasing a Stack Audio SmoothLan network filter.

Have had success with Stack Audio products.

Auva 70 under my speakers, and Auva EQ under my Puritan PSM156.

@jerrybj 

Did you order the Smooth LAN Filter yet? The specs are quite scant…I sent an inquiry asking its compatibility with 1Gb/s network streamers. Some filters like Muon only uses 4 cores (100 Mb/s) vs 8 cores cable architecture design thus making them incompatible with streamers that requires Gigabit Ethernet.