Compact Disc is a very forgiving format as far as dynamic range goes: you can squeeze the life out of a master tape (or digital file) and it'll still sound okay, if kinda annoying. Vinyl mastering is fucking hard, not only because of the dynamic range, but having a good knowledge of EQ so as to roll off or boost the signal either overall or in sections, knowing to do that for the end of an LP side (where the biggest risk of distortion and sibilance lays) and the beginning of a side (to keep the needle from jumping right out of the gate), plus knowing when/if to expand or contract the width between grooves to allow for quieter or louder passages to play out without either pre-echo or distortion, not to mention skipping and lack of tracking. And often, an LP's master would arrive with each track having its own required EQ notes, as they were recorded at different times in different studios, so you'd have to fix all that shit on the fly, as well. Even to this day, any dipshit with a copy of Pro Tools or Premiere can "master" a CD or download file (I have, it's a joke how easy it is now if you have the right plugins). If you're gonna master an LP, you gotta be on top of your shit for it to be even playable, let alone sound good. An okay sounding CD will sound okay to pretty good on a decent system. Even a worn well mastered LP on a good turntable (not even expensive, like $250 and up will get you a solid rig) through a halfway decent amp and speakers will blow your fucking mind if you've only ever listened to music through earbuds or laptops.
