Customer Reviews:
 Stick to over the ear or standard headphones June 7, 2008
These have good sound and good sound isolation. However, most of the sound isolation comes from the effectiveness of the earpiece seals.
Turning on the noise cancellation while on a plane results in a hissing sound similar to turning the volume way up to hear the audio on a weak audio recording. This is probably because it is doing what it should and creating an opposite soundwave to cancel out the background sound. But since the outside noise is blocked a lot by the rubber earpieces, the outside sound is not getting in, but the cancellation sounds are. Turn cancellation off and it gets quieter. Lower frequencies are cancelled out because I think they make it through the rubber but the higher hertz hissing stands out so much that I'm indifferent between having the cancelation active or not. The rubber earpieces do a good enough job on their own.
My on the ear (and bulky) Panasonic RP-HC-100 headphones do a great job of drowning out just about all sounds. A slight hiss remains, but at maybe half the volume.
If I pull the earpieces of these JVC's slightly out of my ears, the noise cancelation does work but the general noise level is higher. Turn the cancellation off and the noise being cancelled out becomes apparent.
In other than airplane environments, they do seem to work better. But I don't really need noise cancelation except on a plane. For a plane, I should have just bought many of the less expensive heaphones with the same kind of rubber earpiece. The noise cancellation just increases the price with no real benefit.
 Very effective product. May 2, 2008
I've had two noise cancelling headsets and these are by far the best. If there is a fire in my building I'm toast. Also I can't hear the phone ring. LOL. Glad it has a flashing light.
Poor expectations April 2, 2008
Although excited when received, very disappointed when used. The phones did not seem any better then the one I was using. The base sound was just fair and the noise canceling did not seem any different. Would not reccomend this product. Sorry...........
 If I could have given ZERO stars, I would have February 23, 2008
This product is, plain and simply, falsely advertised. I fly often between coasts and bought these for listening to my ipod on the plane. To market these as "noise cancelling" is flagrantly deceptive marketing. I actually found the sound WORSE with the noise cancelling feature turned ON. The earbuds alone drown out a good deal of the aircraft engine noise...that's probably where they get most of the "80% sound reduction" from. The noise cancelling feature created an annoying buzzing sound in the background. Now I'm faced with how to get a refund with no packaging or receipt. Thank you JVC!
 Noise cancellation works! January 19, 2008
I launched a search for a particular JVC Inner Ear Noise Cancelling Headphone I'd seen advertised. The search results were for a diffferent model number--same capabilities--same specs--half the price. I suspect I'd found an older model that had been discontinued. big deal.
Purchase was easy, delivery was prompter than expected, communication was great. And the product works better than advertised, blocking the heavy-metal rock blaring at my health club.
Dan
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