Out of curiosity I took the trouble to play the same CD from last week- a few tracks and then played the FLAC of that CD stored on my Server's SSD. Best my ears can tell they sound the same now. Remember last week when I was running w/o the SR Ethernet Switch I noted that it sound was like two different cables. So with my server the incoming ethernet signal can affect the local files.2 enhancers had the same effect with my UEF mk1, but the effect was not immediate. Took a few hours with music playing. In my setup, using Stack Audio footers is also beneficial. I think you said that footers did not help when used with the demo mk1 in your setup. All systems are different...
Great to know that the enhancers work so well with the UEF mk2. Really didn't expect that given the improvements made inside the chassis (as per SR marketing material, at any rate). Also good to know the break-in for the switch is minimal. The mk1 took a month in my setup. But that is typical for new gear here.
Then I played the hi res version 24/96kHz on Qobuz. Sound is just a touch warmer but soundstage, imaging and detail is the same as the FLAC file and CD. Seems to me hi res files are more dependent on the engineering/mastering than format. Back in the day CDs were inferior to vinyl on my rig even with a high end CD player- $6k range in the early 2000s. And that was in terms of everything- PRaT, Soundstage, detail/resolution and imaging, But these days be it CD or Streaming, digital rocks for me. I don't even want to think about the cost. I'm past that. At any rate, I'm glad I borrowed the SR Ethernet Switch UEF. It's quite the step up in streaming for me.