I've been reading a lot lately on a high-quality portable audio setup, and I've finally settled on using my iPhone 5S as the source, along with the Lightning to USB adapter and a JDS C5D DAC/amp combo. But I still haven't found this information: does the new digital audio out in iOS7 support rates as high as 24/96? I've seen people saying that they can get a DAC working with iOS7 but no reports of the actual suppported bit/sampe rates.
I'm using the Beyerdynamic DT1350, and I know that I am not using them to their full potential without a dedicated external DAC and amplifier. But will there be much of a difference with these headphones between 16/44 and 24/96 with the audio formats that are supported by the iPhone? My reasoning for using the iPhone is that I do not want to lug around an additional audio player. If possible with this quality of playback, I'd like to stick with what I already carry around in my pocket.
Any comments would be greatly appreciated . I don't want to blow another $200 on more equipment if it's not the right choice.