I like it as much as John Marks did -- probably more.
The DAC section of this bad boy sounds wonderful. Running my Stax transformer from the speaker outs and my RS-1 straight from the headphone outs. I really prefer it to my old ECD-1 in every way (so sorry, Monkey). It's an ESS chip (the lowest one), and it is just liquid smooth. Fantastic extension in the treble, without making either my Lambdas or the RS-1 harsh in the least. Everything is pure sparkle. One hiccup, though -- my audio preferences in Leopard don't show 24/96 as an option. The highest I can get is 16/48. Not bad, but not ideal considering it's specced as 24/96, and I have some recordings to make use of that. I've left a message with Jim Spainhour about it.
The DAC is tied to a seemingly nice class A preamp, which is the same circuitry as the headamp. It's a nice headamp. I compared it to a bunch of junk, and it made it sound like junk. Not much more to say there. I'll run it up against some stars at this weekend's meet.
Switching the lone 6922 on and off yields some difference, but not enough to make it much more than a gimmick. The low midbass seems to firm up somewhat with it on, so I leave it on, but I don't know if I could reliably identify the same passage with the tube on and again with it off. I got a gold pin Amperex 6922 to roll in and see if that makes any difference. It's my only remaining tube to roll, so I had to try at least one.
My only other speaker amp to compare this to at the moment is the trends TA 10.1, and the Nova beats it soundly. In comparison, the Trends feels strained. Highs are etchy, and it's far less dynamic. It's also only 10 watts into 8 ohms, but how much does a Stax trafo really need?
I've only had it a few days, so we're still getting to know each other. I'll keep you all updated.