If you want the Star Wars original unaltered trilogy versions of the films in best digital format possible, then you’ll need to buy the Limited Edition DVDs as each set contains the original unaltered version on a bonus disc in addition to the modified special edition movie.
Original unaltered trilogy refers to the original theatrical releases of the first three Star Wars films, A New Hope, The Empire Strikes Back and Return of the Jedi, before they were modified for subsequent re-releases. Unfortunately, the audio in the unaltered movies are only coded at stereo 192kbps but for those who want an official digital copy of the original trilogy in theatrical release format, this is the only option out there.
Currently on Disney Plus, all Star Wars original trilogy versions are the modified special versions. The only way to watch original Star Wars trilogy unaltered is to get the Limited Edition DVD versions of the movies. Because Star Wars movies have been re-released so many times with different packaging, look for the case that says Limited Edition in gold background for the widescreen version and in blue background for the full screen version.
Limited Edition A New Hope Bonus Disc DVD Menu View
Original Star Wars Trilogy Unaltered on LaserDisc and VHS
Other formats of the original Star Wars trilogy does exist in VHS, VCD and LaserDisc formats. The quality will be lower than that of DVD. But for collectors, these formats are also very nice to own. LaserDisc is closer to DVD quality but it’s expensive to find a LaserDisc player and the movies if you don’t already own one.