Different sound mix for ANH with different content also depending on which release.

ESB and ROTJ also had different sound mixes but were mostly the same content just with improved quality on the remixes. 1993 and onward got a new uniformed sound mix for all 3 which was the best they would sound until the special editions came out. (Speaking purely of audio quality and not content of course).

The 93 mixes are quite good, almost as good of quality as the SEs but with the original content except some additions to ANH. (The score still sounds very aged and sort of tinny/muffled in ANH though, that wouldn’t be fixed until 1997)