"That's because source material is recorded and mastered using all kinds of different-sounding equipment, such that there are all kinds of variabilities in the sound of source material-"
Very true.
But you cant have a different system for every case here when something is recorded differently.
At some point you just have to accept the inherent flaws and imperfections in the entire performance/recording/playback process and enjoy the art that the makers provide as it is.
Its like going to an art museum. You accept and appreciate an abstract painting by Monet for the art form it is. You don't look to run image sharpening algorithms or buy a different pair of glasses in an attempt to make it clearer what the heck it was he was painting.
Very true.
But you cant have a different system for every case here when something is recorded differently.
At some point you just have to accept the inherent flaws and imperfections in the entire performance/recording/playback process and enjoy the art that the makers provide as it is.
Its like going to an art museum. You accept and appreciate an abstract painting by Monet for the art form it is. You don't look to run image sharpening algorithms or buy a different pair of glasses in an attempt to make it clearer what the heck it was he was painting.

