Summary: I was looking for great sounding noise cancelling headphones since I'm not happy with my Bose QC15 sound quality and sold it on ebay, at the same time I keep researching for my next NC headphones but I didn't like what I read online reviews on any of noise cancelling headphones.
Excerpt: Denon’s AH-NC800 headphones are active noise cancelling models. They come with two lengths of cord and a two pin adaptor for older-fashioned aircraft sound systems. They use one AAA battery for power (good for 40 hours, says Denon), and come with a nice carry case.
Pros: Very good sound quality, Noise reduction feature, Very comfortable to wear, Can be used in passive mode