There's no additional DAC involved, the analog audio is already on a USB-C pins.
https://images.thalia.media/-/BF2000-2000/939d34e30a3d4f6587...
https://ae-pic-a1.aliexpress-media.com/kf/Sfa5566c711b14a4aa...
I've tried those dongles and they are all a huge hassle compared to just having a headphone jack built in.
My main problem with USB-C headphones on my Android phone is how unreliable they are. But if the USB-C port can just pass through an analog audio connection, that should work much better, I expect.
Edit: This feature is apparently deprecated (removed?) in newer versions of the USB spec! https://en.wikipedia.org/wiki/USB-C#Analog_Audio_Adapter_Acc...
> to fit other features in
what exactly, one would ask. If there are tradeoffs, if would be nice if the customers can decide what to have, in a modular product.
A "modular product" has tradeoffs in and of itself (such as size, price, water resistance, …), which presumably would not fly for a majority of customers.
Only issue is some very cheap ones are actually bluetooth headphones in disguise where the usb-c connection only exist to power the bt recepter inside the headphone. I find this completely stupid.
On that note, I remember reading how some phones were able to use the headphone jack as a serial debug port, which is pretty neat.
https://wiki.postmarketos.org/wiki/Serial_debugging/Cable_sc...
That is how your car radio could display the name of the current track.