I asked Dave Hamilton to come on the show to help us understand the impact of Apple removing the analog headphone jack. I didn't want to do a big hand wringing about how annoying it might be to replace all of our headphones, rather I asked Dave to come on the show to explain in geeky detail what it means to have analog vs. digital headphones. We start at the beginning talking about how sound is produced in a computer and work our way through sample rates, bit rates and into some of the mechanics of a digital audio converter (DAC). We also talked about what's going on when you use Bluetooth headphones.