You just hook up your existing DAC to the USB-C port instead of a 3.5mm jack, and the rest is just software. It's not like they need to use special circuitry th

You just hook up your existing DAC to the USB-C port instead of a 3.5mm jack, and the rest is just software. It's not like they need to use special circuitry that isn't already in your phone. All phones in existence already have a DAC (or you couldn't make phone calls using the built-in speaker).