I have an ENO Ag filter between the ER and Statement and it is amazing.
I am using a Mutec Ref10 for both an ER and a SOtM switch that sits between the ER and 8Switch.
Funny thing happened after adding the Mutec. I had the Roon core on an Antipodes Core off the SOtM switch, but after adding the Mutec going back to Experimental mode on the Statement was better than separating the core and player and also better than Experimental mode without the Mutec. I dont understand that.
All this has made a huge and I mean huge improvement streaming Tidal or Qobuz, however CD's ripped to the Statement always sounds better than streamed from Tidal or Qobuz in my system. Playing downloaded Hi-Rez and especially DSD makes for a bigger delta.
I am waiting for Innuos2.0 to move on from Roon, maybe Tidal and Qobuz will improve then, but I will have to hear it to believe it that streaming sounds better.