> The corollary is that you have to worry about the DAC in the phone if you have an analog jack, and they're not good. So with digital only, you have the option of buying a good off board DAC (if you care), or otherwise selecting digital headphones at a price point you like.
You could already connect an off-board DAC to the iPhone pre-iPhone 7
You could already connect an off-board DAC to the iPhone pre-iPhone 7