This room has 3 parts, music listening, movie sound mixing and movie picture editing.
Crazy I have 4 Dolby Atmos systems. We have 73 speakers that I can think of, not counting the 14 TVs. That sounds really over the top but it's a big house.
My Steinway Spiro/r is the most hi fi thing I own.
Hybrid, low frequency internal amp, also center channel
Paradigm B speakers (4) Ceiling (4)
Passive speakers surround also Paradigm Atmos speakers in the ceiling
JL Audio JL 113 v2 subs (2)
Shakes the house an sounds good needed for weak bass out of the 9hs
Boulder 1110 Preamp
Luxman M-10X
PS Audio Direct Stream DAC MK2
Lyngdorf Home Theater processor MK-60.2
Brain of Home Theater
Anthem MRX amps (10)
For passive surround speakers and biamping
PS Audio Perfect Wave SACD Transport
This unit is really good
PS Audio Direct Stream Power Plant 20 (2)
I had to have my house power upgraded and added circuits.
Elac Speakers Navis Series
For video editing monitors
Steinway & Sons Spiro/r Model B Grand Piano
This piano will playback nearly exactly what the original musician played the keys have 1000 points of dynamic resolution. This is the greatest HiFi system ever.