Core Infinity listening impressions and comparisons

[Confused]

Has anyone done any comparison on SQ between AIR and UPnP ? First experiments using Audirvana Plus suggest clearer bass with UPnP, but more confused trebble, especially on complex piano passages. See for example Perahia's new recording, Hammerklavier 1st mvt.

On the plus side, UPnP is simpler to use in practice, always works, compared to AIR where the Pro may not even be selectable in the menu bar, especially in multi-user configurations, each running their own copy of AIR.

I will certainly try this when I get some free time.  One thing I would say is that your observations with UPnP are curiously similar to mine when trying AirPlay, see post#200 of this thread.