Hi S.
As an extension to what
@mordy said, I must say that my own system has gone through various Jekyll and Hyde stages in this regard...both interesting and perplexing lol!
Its highly resolving nature can indeed be both a blessing
and a curse...it will indeed shine a blinding light on poorly engineered/recorded material, while revelling in that produced by those who know what they're doing lol!
...
and yet, I have spun very old recordings that I expected to sound awful through cans - such as Peter, Paul and Mary tracks - and been amazed at just how good they were (making allowance for stereo imaging, of course!). And some that didn't sound too good at first, do seem to have been handled more 'flatteringly' as the amp - plus tubes and cables - have matured... (perhaps brain adaptation also lol?!!
).
Fortunately, I myself now have very few favourite pieces of music that allowances can't be made for...the rest
more than make up for them!...CHEERS!...CJ