By eHow Electronics Editor
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The Bose Quiet Comfort 2 Noise Canceling Headphones were designed with the frequent traveler in mind. They include the most wanted features in Bose technology, including light weight headset, overear units for exceptional comfort and folding earcups for easy portability. In addition, the Bose Quiet Comfort 2 headphones can be used with or without an audio source to reduce ambient environmental noise by as much as 70%. To use the Quiet Comfort 2 headphones for noise reduction without an audio source, follow the simple steps below.