What class of amplifier has the most high definition sound ?

OTL -  Atma Sphere

Would like to know where the Devailet amps score in this? (Class A in parallel with Class D).For those familiar with them please chime in.

I have a new definition.  With research (listening research) and a budget that matches your research, it is the amp you bought given the rest of your equipment.

There's hardly a consensus about Deviolet amps. Those things evoke some real hate. 

Lots of excellent input here, especially M Green, and George

IME, the interaction with the room plays a very significant roll

I am blessed and cursed with a large room (~ 19 X 35 X 12 i. The blessing is virtually no boundary interference. The curse- finding a amp/speaker combination that will properly energize the room without going overboard

I just replaced a excellent Audio Alchemy 175w/ class D stereo amp with PS Audio M700 monos which only have ~ 200 hours on them (bought them slightly used). Even stone cold, they did a better job of energizing the room (I could better hear deep background low level tinkly things, like in the opening of Famous Blue Raincoat Joanne of Arc, BUT, I think I really need to double their ~ 350/700w to get the full texture

Speakers are Emerald Physics KCIIs @  92dB with Clarity cap and Wire World upgrades +. even though a very benign load, I am told the KCIIs love some power. To compensate, I have  2 SVS Bash amp subs (Ultra and Plus), but their volume control is way too coarse at lowest volume they come on too much, so very hard to blend  

IN MY ROOM I probably need Ice EDGE power @  ~ 1200w to properly energize the room