For the most part not much IMO. Stereo done correctly, whether in original recording or not, sounds better to me nearly all of the time because of the spatial and dimensional aspect of the sounds which stereo provides. Which sounds more life like. Sometimes stereo can be annoying, even if recorded in stereo, such as music with only two sources, for example guitar out of one channel and voice out of the other. Or John Coltrane blowing down the house from only one speaker and the band (or parts of it) from the other. I wish those recordings were mono, or at least the lead player's solo. With stereo, I prefer the lead singer/player/soloist emanate from both speakers, creating a center image as if mono.
I have the Beatles on mono and stereo. I do prefer their more quiet material in mono because I feel I can get deeper into the music, but their more raucous material in stereo. When it comes to R & R, stereo is the only way to go IMO. Purity be damned.
I have the Beatles on mono and stereo. I do prefer their more quiet material in mono because I feel I can get deeper into the music, but their more raucous material in stereo. When it comes to R & R, stereo is the only way to go IMO. Purity be damned.