We have already highlighted some benefits of T2 chip present on recent Macs here and here but the developer Rogue Amoeba recently discovered another cool thing brought by Apple.
All recent Macs equipped with this chip (iMac Pro and the newly released MacBooks Pro, MacBooks Air and Macs mini) now ?see? the speakers built into them separately from headphones when connected.
This means that not only is it easy to route different audio sources separately using software such as Rogue Amoeba's Audio Hijack, but even natively you can, for example, listen to music through your headphones and set up your Mac to make sound effects through the speakers. embedded all this in Sound System Preferences.
The developer notes that macOS is smart enough not to show the headphones as the second device until something is actually plugged into the 3.5mm port, to prevent users from inadvertently routing audio to something that can't get any output. sound.
Even with this capability, the standard behavior continues: As soon as the user plugs in a headset on the Mac, it takes over as the primary audio output device for everything. Yes, if the user wants to exploit the new benefit, they can configure the outputs the way they prefer in their preferences.
via Daring Fireball