Re: [US] INTERSTELLA 5555: The 5tory of the 5ecret 5tar 5ystem
The "wrong" audio would be having only lossy (Dolby Digital, DTS) tracks instead of at least one lossless (Dolby TrueHD, DTS-HD MA) track. That's why I passed on the US K-On! BDs, Bandai put only a poor-quality 192kbps Dolby stereo track on it.
Anime without the Japanese audio is merely a cartoon.