I bought them to use in an airplane. I was disapointed. The noise canceling works poorly, I still can hear surrounding noises easily. The battery is at an odd location (on the cord). The cushion does not hug the ears well. The only positive is they are relatively lightweight.

These comfortable cups won't stay on when exercising. Instead, they're designed for long journeys. With the noise-cancelling feature turned on outside noise is blocked well, but the delivery suffers from woolly bass and unexciting treble. With it turned off they sound relatively lifeless.

Noise-cancelling works well

Woolly bass and unexciting treble; Lifeless sound when noise-cancelling is turned off

Somehow, the Ballad of Jed Clampett comes to mind, as I start to write this. You know, the Beverly Hillbillies. He was living his life, struck gold, and everything changed. That's kind of what happened here. Except I didn't strike gold or become rich. Yeah, the metaphor doesn't exactly work.

Very light; portable; built in EQ/NC function

Expensive for what they are; require a battery

Sony usually puts out high-quality stuff, but these only cancel MAYBE 15% of ambient noise. They are comfortable and sound great, but trying them with the supplied battery and a new one resulted in the same anemic noise cancellation. They would be good if sold just as headphones.

Like Sony's in-ear MDR-NC22 noise-canceling earphones, the new MDR-NC40's best feature is its price: Both pairs are only $100. The MDR-NC40 isn't an in-ear model but a supra-aural set of headphones, meaning that they sit on the ears without creating a seal.

Affordable; Compact, collapsible design; Decent noise cancellation; Enjoyable audio performance with solid bass performance

Takes a standard AAA battery instead of a rechargeable cell; Battery pack is in the middle of the headphone cable

These are a pair of noise-canceling headphones from Sony. With the power of one AAA battery, they can cancel ambient noise. The way they do this is with a tiny microphone on the outside of the headphones, which records the sounds that are heard, and then plays them back at a 180 degree angle, which...

Better than any that I have used, but I guess it will be better used only for flight journey, which is what was intended for anyway. The wire seems too long for the daily use and for movement flexibility, it is kind of too long. it does cancel out noise and does what it says.