I'll never forget the 60 mile trip to see Star Wars in 70mm with Dolby sound at Beaverton's luxurious Westgate Theater, in the summer of '77. My older sister and her boyfriend took me and my brother to see the show at the closest place that was equipped and authorized to show it. Star Wars was NOT allowed to be shown in average, run-of-the-mill theaters with projection or sound that was not deemed adequate. As I found out later, most theaters in this state were running 1940's to 1950's-era carbon-arc 35mm projectors on reel-to-reel systems, with human projectionists doing manual change-overs on each reel, and continually needing to monitor the arc's flame and adjustment, framing, and focus. I know, since I was later a projectionist for Moyer Theaters, the state's largest, almost total monopoly owners of 95% of the state's screens. Dolby sound was available at only a small percentage of screens in '77, so Star Wars was not shown on the huge preponderance of average, crummy projection and sound systems that dominated the theater landscape back then. In 70mm with the then-new Dolby sound, it was awesome, truly awesome!
In '83, THX sound was developed in order to make sure that the soundtrack of the third film, Return of The Jedi, would be totally awesome in the best, high-end theater auditoriums.
A good part of the majesty and awe of the Star Wars films has always, always been the AMAZING sound, sound track, and sound effects. I bet this film totally kicks ass in terms of sound, in all aspects.