ken6217
Headphoneus Supremus
This apparently is out already and so I can't help but think is perfect timing in your case. No reviews yet obviously but with the pedigree is definitely worth waiting a bit for.
I saw this on the net last week. I have been debating it. However a few years ago I was thinking of replacing my Mark Levinson mono block amps and demoed a pair of Pass XA200.5 monoblocks. I thought the bass was soft and I sent them packing. I don't know if for this application they are better than any of the other s/s state amps mentioned above or not.