The ears and listening rule OUR system room...Not audio....
Acoustics and psycho-acoustics rule audio...
Why did i say that ?
Because non trained ears in acoustic cannot understand their own limitation... Buying 40 amplifiers is not a ears training and it is even not knowledge, it is only a seller expertise.... And i am not a seller ... And electrical measures of gear design is only a limited set of measures and it is not enough... Physical and acoustical set of measures matter even more...
The "trained" ears rule audio and trained ears come from acoustic basic concepts and experiments...
If you cannot control timbre, imaging, soundstage and immersion in your room you cannot know what these interacting concepts means working together...
This is why people in audio forum do what most reviewers do: they sell gear upgrade as main solutions...
This is not knowledge sorry. It is marketing.
Then trusting more his ears than necessary experiments is preposterous and counter productive...
And trusting electrical measures only over anything else and over his ears is blind ignorance...