Rating: 
Summary: Great deal and worth every penny
Review: These gems are worth the 99.00 especially since they are sold for 149.00 everywhere alse (including sonystyle). I use them with my Ipod becasue I travel quite a bit and like to travel light...therefore the bose models were too big and a bit too expensive to be potentially lost in another country (I loose things quite a bit). The naysayers that have posted here are a bunch of whiners... Sont listen to thier reviews, go to a electronics store and try them out for yourself (bring along an alcohol swab you never knwo who put them in their ear bbefore you) and you;ll be amazed. I think people see ot hear "noise cancelling" and thing that it simulates deafness...nope that would be deafness. Noise cancelling means a supression of noise, ambient noise so dont expect to put these babies in while working on the tarmak of JFK airport and expect complete silence. A great buy and a great deal at 99.00
Rating: 
Summary: buy earplugs or a different product
Review: These noise-canceling headphones are just glorified earplugs with the option of playing music through them. Small sounds easily irritate and distract me, along with other sounds. Since the headphones fit in your ear, they work at least as well as earplugs, but that's about the limit of the noise-canceling technology. There are _very_ slight reductions of (parts of) some noises because of the electronic noise-canceling, but hardly noticeable and not worth paying any money for. The headphones are only worth a tenth of what I paid, and not because of the noise-canceling features; it's only because they are earplugs that block outside noise (whether ON or OFF) and they let me hear my music better than without the earplug feature. I'm sending mine back. I'm much better off trying another brand; it's either that, or decide whether I'd rather listen to music or use earplugs.
Rating: 
Summary: works well on subway
Review: they do fall out easily and is slightly uncomfortable at times. but once you can get it in correctly it's ok. they do a good job at canceling out all the subway noises,(i mean even loud people on he subway). so i give it a 2 for fit and a 5 for noise cancelling but a 2 for looks and feel ( very cheap feeling plastic and the cord could be better material for cost) so it's average. i got mine on ebay for slightly less.
Rating:
Summary: They don't cancel noise
Review: They don't block any noise that I can tell. None at all.I've used good noise canceling ear phones on airplanes before and thought having a small portable pair would be worth the money. WRONG. These don't block any noise at all that I can tell. The only thing turning them on does is amplify the sound. The ear buds do block out some sound but music on or off, noise cancelation on or off it's all the same. What they are is a very over priced, regular old earphone.
Rating: 
Summary: Bring back the MDR NC-10 !!!
Review: This is a big step back from the NC 10 which was basically the same except it sounds much better and seems to cancel better too.
The design of the 11 has a restriction in the tube where the 10 was very open which seems like the likely cause of choked and bumpy highs and less openended bass response. The idea of a volume control was OK but it should be a locking type 'cause it would get moved unintentionally.
The listen-through feature should have stayed. oh well...
Rating:
Summary: Smart product (but
Review: This is an interesting product - interesting as in its noise-cancelling feature is 90% based on its ear-bud design rather than its hyped noise-cancelling circuit. Technology:
-----------
Its noise cancelling circuit is unnecessarily hyped up. It merely does the following (my guess):
There are small microphones on each side of headphone,
which record the ambient noise and give this info to noise-cancelling circuit which sends a cancelling frequency signal so
as to cut out the noise. (Try configuring voice on yahoo messenger and you'll see what I mean). Whats great about it
--------------------
Sleak design, sexy look. Most amazing thing about this product
is its earbud-design. When I put it in my ears without any music
being played, I cannot even hear my keyboard taps!!! What it means to you:
---------------------
If you are getting it as a gift, gladly accept it.
If you wanna buy it out of ur own hard-earned money (read not
from stock-options ;)), my humble advice is dont...or if you
are so desperate buy it used.
If you are crazy about owning cool stuff, well in that case,
you will end up getting this one (like me) :)
Rating:
Summary: Description fits the Aiwa, too
Review: This product claims similar benefits to the Aiwa noise cancelling phones, which I bought from Radio Shack for.... Sony's website claims 70% (10 dB) reduction from 50-1000Hz and offers a 3 month warranty. The Aiwa unit claims to cut noise from 40-2000Hz. It unfolds and sits on the external ear. It seemed comfy for the few minutes that I had it on & it cut out about 40-60% of sound from about 50-1500 Hz (sitting by my piano). I didn't have a dB meter on my outer ear--the reduction "subjectively" sounded like 50%. I turned on my vacuum cleaner and found that it did significantly tune out lower frequency noise but left annoying higher frequencies for me to deal with (that's Beethoven, Bach and Brahms!). I don't know the frequency range of jet noise, so I can't say much concerning their use aboard a 727. I conducted a little experiment, in which I found some inexpensive Sony ear bud phones and covered them with around-the-ear protection muffs (hardware store), usu. rated at ~25-28 dB noise reduction. I would have to rate the combination a tremendous success irrespective of price!
Rating:
Summary: Poor quality
Review: Used infrequently on airplane flights for four months; suddenly the right channel went dead and remains so. Unfortunately, this quality or lack thereof appears to be a new Sony characteristic. My eight month old XBR TV has also failed. Go Bose for quality or Aiwa for value.
Rating:
Summary: tone down your expectations significantly.
Review: When you read the specification of how these are meant to work, they do 'make sense'. However this is probably not what most people - myself included - are/were expecting when they read noise cancellation.
1)These are in-ear. Sitting at home with these in, there is no difference with NC on or off. The fact that they are tight in-ear plugs blocks out the majority of the noise!!!
2)NC: 70Hz - 1000Hz. Haha! If I knew this when I asked Santa, I would have changed my order. This is basically low-level background noise - walking along a street there is reduction in transport and background noise, everything else gets through - people speaking.(But the plugs do reduce the majority of this).
3)Used them on the commute in by train (not bad - a definite improvement).
But now for the science - it is not the noise cancellation that causes this improvement. It is actually the low-level hiss!! This hiss is not anti-noise - I would guess that it is (10db) white noise. Which if anyone who understands audio knows the ear/brain will start to ignore after a while.
The audio signal is amplified and you get a ~10db (70Hz-1000Hz) white-noise overlay. With the earplugs blocking the majority of the noise.
Very clever, a practical engineer's solution.
Noise reduction yes but not noise cancellation.
There is no hiss in proper-noise cancellation - period! Feedback problems perhaps, but not a continuous background hiss.
So they do allow you to hear your music better by blocking most of the external noise and then tricking your ear into ignoring the lower-level frequencies. This will be an improvement in a few situations.
Also, the wires suck - absolutely - poor design. Someone will strangle themselves one day. They suck so bad that my next headphones will be wireless (bluetooth).
2 stars for marketing - none for technology!
Rating:
Summary: I should have listened!
Review: Wow, I didn't believe the negative reviews, so I went and bought one of these things.... It was useless! this thing is a complete waste of money (hope I can return it) I have a 10 year old Noisebuster NB-DX, and it does a better job of noise cancellation. Turning the nc11 on and off made no differenece at all to either low frequency or high frequency noise, other than adding a little hiss when it was on.
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