Some compressed movie files use low-bitrate audio. Downloading a high-definition 5.1 or 7.1 surround sound track can significantly improve your home theater experience.
| Method | Audio Quality | English Track Availability | You "Own" It? | Accessibility | | :--- | :--- | :--- | :--- | :--- | | | Best (Dolby Atmos/Lossless) | Yes | Yes (Physical) | Requires Player | | Blu-ray | High (DTS-HD MA 5.1) | Yes | Yes (Physical) | Requires Player | | iTunes/Amazon Purchase | Good (Dolby Digital 5.1/Atmos) | Yes | Yes (Digital License) | Apps/Cloud | | Netflix/Prime (Rent) | Fair (Compressed 5.1) | Yes | No (Time-limited) | Apps Only | The Dark Knight Rises English Audio Track Download
For those who have upgraded their setups, the 4K Ultra HD Blu-ray edition offers the highest possible audio quality. While the standard DTS-HD track is still present, many 4K versions boast a Dolby Atmos track. Unlike traditional channel-based systems, Dolby Atmos is "object-based," meaning sound editors can place specific noises (like a falling piece of debris or a passing police siren) anywhere in the 3D space, even overhead, provided you have the right speaker configuration. Some compressed movie files use low-bitrate audio