I found long ago that experimenting on ones own is best because we all hear differently, and I wasn't making any progress listening to others tell me what I should not hear.
That is true, but it has to be based on some educated assumption, otherwise we are in voodoo territory. Shall I expect better bass by placing my amp lower on the floor or better highs when it is on the upper shelf? Do black cables bring darker background (shall I experiment?).

