The Apple Dongle has a ADC?There are phones that have a DAC and headphone amp inside, and that rely on dongles to output the analog audio via their USB Type-C port.
That is not what these dongles are.
The ones tested here have their own DAC, Headphone Amp, and ADC built into the Type-C plug. They're genuine USB DACs.
The performance of which is what Amir tested in this review.
Hmm, I guess that’s how it would support a mic in.