Did you say you would pay anything to put a headphone jack on a phone where it was painfully absent? Essential wants you to prove it. The startup has released its long-discussed magnetic headphone jack adapter (now called the Audio Adapter HD) for a staggering $149 -- nearly a third the cost of the Essential Phone at its standard price. It's more than just a plug, of course. There's a built-in ESS Sabre DAC and an "audiophile-grade" amp that, together, promise 24-bit/96kHz audio for your high-end headphones. Still, you have to be very, very committed to pristine sound to spend this much on a new accessory instead of making do with the included USB-C dongle.