It is a question that I have been asked a few times, so I decided to put the answer into our website and created a knowledge base page. The transition to digital was done for video (consider the popularity of HDMI) but surprisingly it is still early for audio. The reluctance to switch is likely due to no noticeable audio performance gain from analog to digital. In fact, you can actually achieve better audio performance with a proper system architecture and implementation. By having a better understanding on the subject, on your future lightning earphone purchase, remember to check the DAC and amplifier being used.