macOS Big Sur Startup Chime (for pre-T2 Macs)

UPDATE: This chime is no longer used in T2 Macs but instead a stereo version of it. As of this chime however, it is featured in all pre-T2 chip Macs that officially support macOS Big Sur, starting from Mid 2013 Macs.

From 2017 onwards, Apple quietly introduced a lower-pitched startup chime in all their future T2-chipped Macs. This year, the chime was discovered through a terminal command in February, and with Big Sur's announcement in WWDC.

I managed to extract an image of the T2 Chip's 'BridgeOS', and got the new chime in the best quality possible. However this is not the chime used for the Big Sur (BridgeOS 5.0) update.

Видео macOS Big Sur Startup Chime (for pre-T2 Macs) канала Nobel Tech