Initially a bunch of names came to mind , Krell, Datasat, Trinnov, etc. But I don't need all that to enjoy my music. So more reasonable gear would be something like this.
Yamaha CX-A5200 $2500
Ati AT4000 7 channel $5400
Pioneer Elite Series N-50 Audiophile Networked Audio Player $1100
Speakers...who knows , Revel, Paradigm, Focal, Salk, Monitor Audio, honestly, I'd have to go out and listen to a bunch. So I'd have to budget for flying around the country to hear all these,
I would keep 5 matching speakers under $10k and worry about atmos later..
A couple of HSU subs ULS - 15MK2
A bunch of bluejeans speaker cables and interconnects to string it all together and I'm good..
That would take up $20k easy.