Koss Quiet Zone QZ-2000 Noise Reduction Stereophones

With its revolutionary Active Noise Reduction technology, the QZ-2000 is the superior choice for noise-canceling headphones. Noise reduction is excellent, particularly in eliminating low frequency sounds such as those found on aircraft. Sound reproduction is as crisp and detailed as you would expect, and the overall range is superb. The collapsible design and compact case make the QZ-2000 the ideal choice for traveling in noisy environments.