I thought Bose had mastered noise cancelling - then I listened to these headphones

With the latest QuietComfort Ultra 2, Bose isn't reinventing the wheel. Instead, it's made strides in aspects that matter.

Listen To Wired Headphones With Your Smartphone By Using Fosi’s New DS2 Headphone DAC

The Fosi Audio DS2 DAC and headphone amp is a USB dongle designed to provide high-quality analog sound from a digital signal ...