Thiel Owners

"yes-every budget."?
McIntosh Amplifiers | Shop Music Direct
vs.
Schiit Audio: Audio Products Designed and Built in California
really?

@unsound for a 10 by 13 room. It’s pretty loud. Walls shake. 

prof

Wes Phillips (RIP) wrote for Stereophile about this very subject back in the 1990's. I cannot recall if any TAS writer(s) mentioned grills on vs grills off? My ears did not discern any difference.

Happy Listening!

@thoft, those are pretty big speakers for a room that size.

thoft - any answer to your question of amp / speaker / room adequacy is by nature incomplete, often in danger of mucking things up more than clarifying them. The equation is very complex. Many combinations work OK, and the pursuit of "better" performance is fraught with trade-offs including cost. I know it sounds trite, but if it works for you, that’s the goal.

Now for my personal take. I have outlined my amps and rooms here before, and my MO of playing the next-album-up for my evaluations. That album often works all day, and I hear cuts in the background, in intensive listening, standing and sitting, in measurements, and with different amps, cables, circuits, treatments, etc. I say that significant, recognizable aspects of each amp are audible - and they may be important to you, or not.

Your Adcom 5800 is a big brother to my little Adcom 5300 (at 250 vs 80W/C). They use MOSFETs in the signal path which lean toward tube sensibilities. I have no direct experience with your amp and can’t judge anything about your setup. But Nelson Pass either designed it, or was part of its design development path. Nelson is a world-beater, and his amps deliver high current, which Thiel's demand.
If you enjoy the game, you might find a way to borrow or audition another contender for direct comparison. The game takes time and costs money. At some point we might consider letting musical enjoyment guide us.