Lucas K.T. Lee If you're an audiophile, then you must know that the DAC in an iPhone is never going to do the audio coming out of its analog port justice. For that, you'll need the digital signal going out to a high end DAC that will convert it to analog and into your ears through state of the art headphones or speakers.
Audiophiles should be cheering this decision. Slimmer and slimmer phones were never going to have great audio because there hasn't been room for a good DAC. Removing the DAC to the headphones will force the industry to fix this.