The soundstage seems quite broad and engaging, especially from the forward channels. These displayed a great deal of activity and placed the sounds precisely within their places. Panning can be a little awkward, as the transitions between channels seems slightly jumpy, but overall the audio blends fairly well. The surrounds are less active but they contribute nicely to the effect. Both music and ambient sounds come from the rears, and we even get some decent split-surround usage on occasion.
Quality seems equally fine.
Dialogue can come across as a little flat but it usually sounds natural and accurate, with no edginess or interference. Jerry Goldsmith's score seems especially bright and bold, with strong presence and no apparent distortion. The mix shows some very good bass at times, which adds nice depth to the track. Supergirl packs in a nice little collection of supplemental features. Sensibly, Szwarc dominates the track, since he's the only one of the two who actually worked on the film.