These patented headphones identify and reduce unwanted noise dramatically, reducing the background roar found in aircraft, trains, etc. Advances in Bose technology make what you want to hear sound even better. Their ergonomically friendly, comfortable fit with a fold-flat design makes them easy to stow away when traveling. Slip on a pair of QuietComfort 2 headphones and hear your music come alive. Decades of Bose research combine with their Acoustic Noise Cancelling headphone technology to deliver the ultimate in audio performance. Bose incorporates its TriPort technology in the QuietComfort 2. This consists of 3 small ports in the earcups that produce rich audio performance. Active equalization electronically tunes the frequency response to optimize sound quality.A dual-plug adapter converts to dual jacks, letting you connect to a variety of airline audio sources. An included 1/4" adapter lets you plug into home audio gear. The single-earcup, 5' audio cable eliminates the tangles of dual cable and yolk designs. The cable is detachable; you'll still enjoy the benefits of noise reduction with the flip of a switch. The QuietComfort 2s are a boon when it comes to getting a relaxing snooze enroute. A Hi/Lo switch lets you adjust your 'phones to the audio source you're listening to: Lo for AC-powered source; Hi for battery-powered sources.Bose's proprietary-design ear cushions establish a critical acoustic...

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