Sadly, the Anthem AVM 90 preamp is delayed till late 2021.

So its nad m17 v2 vs maestro x7 or 9.

these seem to be leaders. Which sounds best for ht and stereo?

Industry is being pushed to resolve need for a separate ss 2 chanel system. It will happen eventually. Absurd it hasnt at this point and maybe nad, maestro and anthem are very close.

tube stereo is another matter.