These headphones use digital noise cancelling to cut surrounding noise by up to 99 per cent, and artificial intelligence to work-out 'the best noise profile for your situation'.

Reasonable detailing; good depth and weight; comfortable fit

Harsh sibilant treble; pudgy bass

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.

The Sony MDR-NC500D headphones are smaller than the average over-ear, decked out in faux-leather padding, and made of a glossy black plastic. As over-ears these headphones aren't exactly inconspicuous, but at least they look sharp.

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.

These industry-first digital noise canceling headphones from Sony promise to cut surrounding noise by up to 99%. They use nifty artificial intelligence to determine the best noise profile for your surroundings to deliver quality sound with almost no background noise.

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

Do you find that as soon as you get on a bus, train or plane that you have to turn the volume up on your MP3 player because the surrounding noise is too loud? Maybe you can not ever get a long enough sleep on the train because you have that person making plans with there friends sitting next to you.

Do you find that as soon as you get on a bus, train or plane that you have to turn the volume up on your MP3 player because the surrounding noise is too loud? Maybe you can not ever get a long enough sleep on the train because you have that person making plans with there friends sitting next to you.

Well, Sony have created what have been branded as the best noise- canceling headphones ever made. I jumped at the opportunity to buy them. Then my problem arose, £300. I believe that the cut- off point for an personal audio device's price is where it overtakes the price of your iPod.