If I really want to "hear things I've never heard before" in recordings I've heard countless times in countless environments, I choose loudspeakers and headphones with a flat frequency response. I've come to prefer a set of near-field studio monitors over "audiophile" brands, without hesitation. This shifts the subjectiity to the sound engineers who produced the recording, instead of the "hifi" manufacturer targeting "audiophiles".
If these recordings need to be "fixed" to adjust to my preferred perception of the audio - and needless to say, there's a lot that needs to be fixed these days - then that needs to be done at the recording and mastering stages ("the input"), by recording and mastering engineers, not at the reproduction stage ("the output"), by those who design and manufacture "audiophile" stereo components. This is the conclusion I reached many years ago.
Of course, it is subjective conclusion. Audio qualities will alwys be a matter of preference.
Sincerely,
A Former Audiophile