Best Amp for Timbre, Depth and Spatial Resolution?

Who was the bullet headed reviewer dude at Stereo Review way back when who swore up and down that amps that measure about the same sound about the same? Lots of laughs!

Don't forget the initial question of this topic! Give some brand names and stop arguing to know who has the bigger P...
Everything you say about optimization is right. Using an Audissey pro is the easiest way.
Amps are of course too different to be affirmative on the final result and you also need to try them on your specific speakers to get the perfect synergy.
So the question is too twisted to be answered : Best amp do not really exist without the rest of the system!

I sold Tact in the past, also there room acoustic system. We were not a fan of it. The sound is far from natural. And it sounds even clinical. The demos they give are most of the time dissapoiting these days. I recently sold the Millenium Tact of a friend of mine. It was quite easy to get a much better sound and stage compared to the Millenium. I had sold him this one new in the past. I even see this as a fault of myself. Soon I will receive the new Audioquest Wild dog subcable wenn it comes out. It is a pure silver subwoofer cable with DBS72. This will give a better timing and speed. But also a big advantage in the freq range from 80-140hz. Time and technique go on and on, that is why audio is a never ending story.

Last year I talked with Pass Labs about the idea of creating a new roomacoustic system in there pre-amps. Because the highend brands still do not make a good room acoustic system. Mctosh is using the old dated version of Tact. This is not usable for highend.