Spatial Audio
This means the AirPods Max can track your head and where the device is positioned using a gyroscope and accelerometer. It can then adjust the sound so the audio feels like it’s coming from the source device even when your head is moving. It can also help mimic surround sound quality and work with surround sound formats, although it won’t be the same as being surrounded by multiple speakers. This compatibility is present on most high-end headsets, and used to be called virtual surround sound, although that name has fallen a bit out of favor as it confused people. The head movement tracking is a feature more unique to Apple.