Some listening impressions...
I'm running the software decoding in Tidal via Roon. Win10-->Yggdrasil -->Bottlehead S.Ex.--> Nighthawks.
In general, the records I've heard sound less compressed - wide open - and it seems the noise floor has dropped outside of reach. Very relaxed and natural feel. I'm enjoying it a lot.
Ellington's Afro-Bossa records sounds just beautiful, for example. More air between instruments, it seems. It's varied from record to record, of course. And, I haven't done tight comparisons of 44/16 vs MQA in Tidal but with one exception - Brad Mehldau's Blue and Ballads - I couldn't tell the difference between those two last night.
Again, so far I'm really enjoying the more natural presentation on these records. Our playback chain will of course, affect the results.
Not ready to buy new hardware (though I expect (depending on implementation) results would improve with hardware vs software decoding?) any time soon, but I'll enjoy the new content in the meantime.