There's a guide here from Dolby as to which Macs support Atmos: https://developer.dolby.com/platforms/apple/macos/os-support/ https://developer.dolby.com/platf

There's a guide here from Dolby as to which Macs support Atmos: https://developer.dolby.com/platforms/apple/macos/os-support/ https://developer.dolby.com/platforms/apple/macos/os-support... As others have pointed out it's not support over HDMI.