I came across this article when having another discussion about iPhone wired vs wireless sound quality (TL;DR wired is better) but then the discussion got to whether it was down to the native DAC in my iPhone 5s, or the DAC in my car stereo translating a digital signal better than the bluetooth DAC...
Just thought I'd throw this out the HN crowd to see what they make of the science here. What's the story with lightning? analogue or digital?