This app allows you to quickly turn off noise cancellation on Bose 700 headphones. This is a third-party app and NOT linked in any way to Bose. Bose 700 headphones have a "noise control" button to cycle through noise cancellation presets, but these are on a scale (three presets between 0-10) from actively passing external sound through, to cancelling out external sound. In a very quiet room, any setting on this scale can result in an audible hiss, and you may not want any active pass-throug