How the music was produced/mastered makes a huge difference too. There is a lot of stuff from the late 70's and early 80's where I think a combination of new t

How the music was produced/mastered makes a huge difference too. There is a lot of stuff from the late 70's and early 80's where I think a combination of new technologies and cocaine made for producers creating masters that sound awful to my ears. (disclaimer: not a professional audio engineer, just an instrument player that has some production experience).