This could probably be the biggest travel gadget since the invention of noise-cancellation. http://techcrunch.com/2013/06/04/bo...comfort-20-in-ear-headphones-with-aware-mode/ Half of this article is dedicated to the new in-ear noise-cancelling headphones from Bose, which are (as tested) supposedly as good as -- if not better than -- the current crop of QuietComfort devices. QUIETCOMFORT 20 IN-EAR HEADPHONES The Bose QuietComfort 20 headphones are meant to offer the same security, comfort, and noise-canceling awesomeness as their over-ear counterparts, but they go so much further than that. The dual-microphone system detects volume levels inside the headphone, as well as approaching noises, to ensure that you can ignore the outside world and dive into the music. We tested this out in the presentation, as Bose pumped 85 decibels of New York City streets and subways into the room where we were using the QuietComfort 20 headphones. It worked, to say the least, as none of us could hear a thing, even when we could feel the noise inside the room under our feet. The headphones also do a little extra noise-canceling thanks to a new ear insert, what Bose is calling StayHear+ technology. It uses an extra seal in the ear to keep outside noises where they belong, and adds extra stability with a little fin that hooks under the ridge of your ear. But this is the best part: The new QuietComfort in-ears from Bose offer a new listening mode called “Aware Mode.” A small white button on the Y-remote of the headphones will switch the listening experience to a totally noise-canceled environment to one where Bose pushes only the lower frequencies of your music so you’re still able to have a conversation, listen to a subway announcement or any of your other surroundings. The QuietComfort 20 headphones come with a lithium ion battery station and are said to offer 16 hours of continuous use before the owner will no longer be able to enjoy noise-canceling technology. The new headphones aren’t available until “later this summer” and will retail for $299.