Although long usage of this headphones causes some headache to me, maybe I am not use to headphones, overall quality is great and noise cancelation is also awesome.

Extremely comfortable, great acoustic noise cancelling, and fantastic sound quality

The audio quality, and more importantly, the noise canceling feature of the QC3 headphones is excellent

Great audio quality

The quality of the build looks cheap and almost fragile

I've enjoyed the sound quality but the build quality is apparently lacking.

i use it primarily for the noise cancellation but i do enjoy the good sound quality as well.

Best quality

I use it at my office, are excellent, I can enjoy my favorite music, the sound quality is really good andNoise cancellation is excellent.

I have had these for YEARS and they are still working and have great sound quality

They are high quality- while expensive, they last, and replacement parts are readily available

The noise reduction feature truly enhances the quality of the sound.

Very comfortable with excellent sound deadening qualities

They are very effective in noise cancellation and have a clear and great sound quality

The sound quality is good, although not noticeably better than any good pair of earbuds or headphones to be honest

The sounds quality is great and what you would expect from a company with Bose's reputation.

Headphones are excellent quality, very good sound and have the ability to remove noise, making them perfect for study or rest

It's possible that Bose has improved the physical quality of the headphones over the years, but I doubt this is the reality

The quality of audible sound is incredible, I have a concert every

For things like in flight movies, it really does make it easier to hear the movie and improves sound quality.

Sound quality is excellent, I especially like the way they fit on top of my ear as the over ears design makes my ears all hot and sweaty

Mind you, the sound quality is just fine, but I am not rating it from a perspective of acoustic perfection.

Sound quality is excellent and I'm a musician

You may be of the opinion that physical construction is of little importance if the audio quality remains high, in which case I would recommend these headphones

In fact, having owned a previous QC3, it seems to me as if the older one is of a better quality

They are super light on the ears, fit well and provide awesome sound quality

I have used this headset several times now and every time I get amazed about the sound the sound quality

The sound quality is better than average in my opinion

Nice quality in cheap looking housing

Top quality

this product its excellent, highly recomended, the sound quality is the best, the battery last very long and its very confortable

Compared to the Beats Audio Executive headset, I think the audio quality on those is far better than Bose

This is very poor quality

Shame on you Bose for selling such shoddy quality!

The sound quality is good, although not noticeably better than any good pair of earbuds or headphones to be honest

The sound quality was amazing

Overall, these are overpriced headphones considering that they deliver both mediocre noise canceling and sound quality

The sound quality is ok but missing the low range

Finally, as to the sound quality (most important)

I could still hear voices coming over the aircraft speakers, and some other background noises, but these head phones have such good sound quality, and are so good at masking droning noises, that the background noises I could hear were not bothersome

I've enjoyed the sound quality but the build quality is apparently lacking.

Sound quality is muddy in comparison

Poor quality in sound

Extremely comfortable, great acoustic noise cancelling, and fantastic sound quality

It is amazing how much noise they block and the quality of sound.

Great comfort and sound quality.

Great sound quality

Great comfort and sound quality.

The sound quality is great, especially when using it while flying because it blocks out all the surrounding noise.

I would have given this product a 1 or at most 2 stars, except that the sound quality is very good as characteristic of the BOSE brand.

Perfect quality as well as fabulous workmanship

I am really into great quality sound

The sound quality was also disappointing

Great quality for used

Very good sound quality; seller's description was accurate.

Great sound quality and good noise canceling.

The sound quality is exceptional

He was blown away by the crisp sound quality and even more pleased w/the fact that he could not here the Macy's parade on the television

I'm not much of an audiophile, but these $350 headphones don't seem to cancel noise nearly as well as, nor do they sound much better than, my cheap Sennheiser CX200 earbuds

They have lasted plenty long for our domestic flights as well as to the Caribbean

They work very well with my Flat screen smart TV, as well as with my computer and laptop

Having read quite a few of these reviews, it is clear many owners were as ignorant as I of the lifetime replacement guarantee