The Sony MDR-NC500D Digital Noise Cancelling Headphones and one of the best set of noise cancelling headphone I have experienced. They block out slightly less background noise compared to the latest Bose models, but the sound quality and bass response are much better.

Comfortable; Good Bass

These 'phones are incredible. I paid far more than the 179 that Play are selling these for and at that price you are getting Bose/Denon beating headphones. The noise cancelling element has made some recent longhaul flights very easy.

I actually listen to ambient music to help me sleep so I wear the headphones at night while sleeping..

Comfortable; Durable; Good Value; Great Sound; Lightweight

After doing a lot of research on different headphones, I settled on these. THEY'RE AMAZING!!! I've been looking for a pair of good sound isolation headphones for over a year. I've owned the Beats Studios and I find that they're very bass heavy.

Bought these at the airport before a trip to Europe about 3 years ago and have used them many times, on several trips, and at home and the library.

Great sound; Long Battery Life; Quiet

Maybe the case is a little big but it has a lot of stuff

I travel extensively and purchased these to use while on planes. The previous noise cancelling headphones that I had, Sony NC60 were terrible for ham radio use. The NC500C is simply amazing to use for ham radio.

awesome product, excellent NC, specially on the plane. Has separate mode for trains, also excellent. In office, vs humans, not so excellent NC. However it does make a difference. You can listen for hours without ear fatibugue. Cable very long, carry case good and flexible.

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Noise-cancellation is adjustable to your environment and a monitor switch is handy for temporarily hearing external sound; And external battery box is handy when the built-in batteries wear out, but they work nonstop for half a day without a recharge

Handy external battery box adds to the weight and bulk of the protective carrying case as does the power brick also enclosed; Some bass sounds played at high volume cause ear splitting distortion

The Sony MDR-NC500D headphones are suitable for music listening or movie watching, and they pack in some high quality noise-cancelling technology which makes them great for commuting or long-haul plane trips. Sound quality is good and the headphones are well constructed, but they are expensive.

Stylish and scratch-resistant exterior; comfortable padding; battery pack for extended use; good sound quality; noise cancelling works exceptionally well

Tight fit may annoy some; must be powered to work

The over-the-ear MDR-NC500Ds are, according to Sony, the world's first digital noise-cancelling headphones. Lightweight and extremely comfortable, they certainly provide the best noise-cancelling experience we've had to date.

Lightweight construction; Fantastic noise-cancelling performance

Expensive; Weak bass response