It’s very possible that albums from the 90s were recorded to 2" analogue tape. Then transferred to digital for post production; many ADD albums from the 90s.
No matter what the process, there were many good quality albums from that era.
Digitally recorded vinyl vs streaming
I know this is an hot button for many, but here goes... I like vinyl and have many albums from the 60's, 70's and 80's. I'm interested in some 80's and 90's albums - like U2, REM, Nirvana, but I wonder if they will sound any better than streaming since they were probably recored digitally.