I still use an Adcom Da converter.
I bought and returned a Stereophile raved over 'class "A" DAC (in 2010) which after exhaustive comparisons, was no better than the old Adcom.
I do have the Adcom stuffed with antistatic foam, and via high quality power conditioning.
I have to say I was VERY disappointed with the new $2,200 DAC.
I returned it for a refund.
This is my experience.
I would probably have to spend a Hell of a lot more than two grand to do better.
Though I finally can say my SCD777ES (with my current system bits) is slightly better with CD straight through it's own converters, better than my Adcom with the Sony as transport.