https://techcrunch.com/2018/06/07/essential-is-releasing-a-wired-headphone-jack-accessory/ > Essential has been nearly radio silent since reports surfaced late last month that Andy Rubin was looking for a buyer for his hardware startup. The company didn’t really confirm or deny the rumors — or say much else for that matter. A few weeks later, the company does have some news — but it’s not what you were most likely expecting. > The startup just dropped the second modular accessory for its first smartphone. The Audio Adapter HD features a built-in amp and the ability to play back MQA (Master Quality Authenticated), a hi-res streaming audio technology. Oh, and there’s a 3.5mm audio jack, because everything that’s old is new again.