Pros Compared to others I have used this rates easy as the best. Clear sound, good bass, wonderful design, nice carry case.
Cons None I can think of!
Summary Simply the best headphones I have used. I really like how your ear sits comfortably completely in the ear-cup.
Pros None. Totally disappointing experience.
Cons The entire ownership experience and disappointing resolution options.
Summary I deeply regret selling my Bose QuietComfort 2 headphones; they were reliable and trouble free. I thought the 'upgrade' to the Sony MDR-NC500D would meet all the 'professional' reviewing community hype. (The professional reviewers probably get a set of headphones that have been vetted and actually work.) Mine were defective -- about 30 minutes into my first flight with these Sony headphones, a low, cyclical thumping noise grew louder and louder in my left ear. (Note: I was not listening to any music; I only had the Noise Canceling on and tried every iteration of the NC AI and non-AI functions...and I also tried both the external batteries (fresh) as well as internal rechargeable batteries.) I tapped on the left can, and the motorboat/helicopter thumping subsided...then came back within 10 minutes. This did not stop throughout the flight (and the same occurred during my return flight). When I landed in DC, I tried to exchange these headphones at the Sony Style store in Tysons Corner, only to be told that my exclusive recourse was to call Sony. I telephoned Sony and was told that since I was just a few days over my first 30 days of ownership, I can only have the phones repaired or exchanged for REFURBS!! Either option would take over two weeks, plus I would have to cover SHIPPING! After spending $400, Sony won't swap a NEW pair of defective headphones for a new pair of working headphones!! Hey Sony, you've just lost a (formerly) loyal customer. This is among the most disappointing consumer electronics experiences I've ever had. Do your due diligence, other consumers have had similar disappointing experiences with these Sony phones that I've had. Do NOT buy these!! I recommend sticking with Bose.
Pros Decent noise cancelling.
Cons Creates noise sounding like a computer loading. Poor connection between power cord and headphones. Squeeking connection between headphone jack and headphones.
Summary Wouldn't recommend to anyone.
Pros Excellent noise cancelling and fidelity of sound.
Cons Small buttons for adjusting noise cancellation program in use as well as mute.
Summary I read the reviews here before I bought them and must admit I was a bit concerned with some of the comments. But then I always read anonymous reviews with a bit of critical thinking and decided to give them a try. Please use critical thinking when reading my review. I compared them to what was in stock at the store (no Bose QC-15) and decided to give them a try. I have used (although never owned) Bose QC-2's in the past. I have owned 2 different sets of Shure noise blocking ear buds (excellent but uncomfortable for me during extended use) and have over the years owned several other noise cancelling headsets.
I am VERY satisfied with my purchase and would buy them again. I have used them now for 3 months on several long flights and lots of small flights on Regional Jets. I use them near daily in a lab where I sit 15 feet from a rather large (and loud) air conditioning system. What I have found.
There is a review here that talks about a "clicking" noise and having to return 2 sets. It is true, I too have notice a "clicking" sound on one (the widest frequency range) of the three available noise cancellation settings however, please read on. The only time I notice this clicking is during the absense of ambient background noise. In other words, I have only noticed it in places where you don't need noise cancellation. Selecting one of the other two noise cancellation curves removes the "click" and gives them the type of, for lack of a better term, background noise (sound) that other noise cancelling headphones (like Bose QC-2) give. My explanation for this, and I am not an engineer, is the DSP program in the wide setting does not have any ambient noise to cancel. I see this a lot in the lab where I work with the "visual" image of sound, breaking sound down into its individual components. When an FFT (DSP) is NOT given a signal to work with the visual display is full of "noise". Anyway that is my theory. When I use this setting on an airplane or any other area with some level of ambient background noise the click is gone and the NC is amazing. Sitting here in the queit of the house I pick another cancellation setting.
Sound quality (fidelity) is excellent. I find them to be extremly comforable to wear but on this point your mileage may vary. Battery life is excellent, I have gone about 12 hours and still had battery left and it is nice to know that if the installed headphone battery does die there is a backup battery pack to finish the movie with.
The headphones come with a bunch of stuff (charger, adapters, battery pack, cables) which fit nicely into a rather large carrying case. I must admit to "case envy" when the person wearing the Bose next to me puts his into a nice small case. That said, mine has enough extra room for the mp3 player, cell phone and a snickers bar. The case includes a nifty pocket on the outside to hold my boarding pass.
Pros Superior noise reduction, without debate. That is my primary reason for getting them, and they are several dB better than the QC2, on triple-sevens (one engine on each wing) and 747s (two engines on each wing, which is more noisy).
Cons The QC2s exaggerate bass (a bose constant) but for many (including me) we prefer more bass. So I tweak the bass a bit on my player, problem solved.
Battery life: More is better. There's a small pack for a pair of disposable AAs,
Summary All in all there's a lot of little stuff to carry around in the headphone case. Bose's QC2 is smaller. QC2s have better bass response, and have better battery life.
Sony's are just as comfortable, the bass response can be equalized, and batteries have to be carried anyway. But the Sony's are much quieter. If you are looking for the best noise reduction, these are unmatched. (even my etymotics don't do as well.)