Hi
Re-visiting this , more than interesting thread. $20K is a lot of dough. It represents for many the price of a decent new car, in the USA or Europe..
It may provide more enjoyment than a car, for most audiophiles, even those that are also car enthusiasts... going on a limb here.
I recently acquired the Audyssey MutEQ-X App and have been exploring it, learning form it and getting some good , somewhat unexpected (great) results. my system is based on very inexpensive components. It was a way to get my feet wet in the new world of Science-based music reproduction/systems. This has been and continue to be a rewarding, joyful experience. It has actually permeated other facets of my life. Grat things do not need to be expensive.
This said. My education/search/ Enjoyment continue with this system. I will definitely move to better speakers for sure.., but not before understating a lot more and extracting the maximum from my speakers, the cheap JBL LSR 308 @ about $600.oo to most doorsteps in the USA... next day!!
The revelation is that, setup is underrated. IT takes time and provide great results even with modest components. We have been brainwashed into thinning "Moh' money= Moh' better". The differences are very slim when the compoents are intrinsically good (decent?) and properly setup. I leave it to the readers to decide what is/are decent... hint ASR has charts and reviews that purport to catalog decency/competency
)) in AV components
Now what I'd buy for 2-channel and $20 K max:
Denon AVR-X3800 ...... $1500
Audyssey MultEQ-X App ..$150 (Yep! You need to buy one license for
every compatible receiver you acquire/possess.. Not pleased with this policy)
miniDSp 2x4 HD .... (own it already)
Umik-1 (own it already)
Neuman KH 420 or Genelec 8361 $10~10.5 K for the pair.
3 x SVS, HSU, Rythmik or Monoprice subwoofers $3000 for all 3
Stream from a Raspberry Pi with Volumio on it (own it already)
Stream from Apple TV 4K (own it already)
Stream from a PC (own it already)
No TT!... don't care.
Elbow grease +Brain grease
+ Regular ASR queries: Priceless...
No TT.
I'd (will?) be a happy camper for years of music enjoyment and no FOMO.
Happy holidays!
Peace.