As far as sound and noise cancelling it works as it is supposed to be.

I have had the earbuds about a month and they work great....put them in and turn them on, and the plane cabin noise dramatically drops even if I am not playing music...and when I do play music, the sound is just awesome....fabulous product!!

The sound is also extremely clear

If your looking for earbuds with really good sound for music, these are awesome!

Still, I found the sound well-rounded, full, warm and bassy enough even for hip-hop and dance music -- shockingly absorbing for a non-ear-canal earbud

fantastic sound

Amazing sound cancelling to say the least!

(Most common sounds that travel through walls and floors only transmit loudly at low frequencies since the mass of walls and floors impedes high frequency propagation.

The sound is phenomenal

I bought them as a replacement for the beats studio 2.0, the noise cancelling is better on these, but the sound not beats sound, nor like my other bose

because you can hardly hear the planes turbine, it has a really good noise cancellation feature but just not the sound.

So they're excellent with static, but this just enhances literally every other sound

Perhaps more annoying is that as soon as a pillow or other surface blocks the bud's microphone which is attempting to listen to external sounds to block, it starts making funny sounds in your ear.

They seemed be best for low repetitive sounds like, planes or trains.

Sound Is great too.

I've felt no compelling need to rush into making EQ curves to force decent sound of these headsets

No loud snappy sounds when the drums start

my ears are sensitive to loud sounds, so the noise cancellation does provide just enough audio cushioning for sounds to not hurt

They don't block out all sharp sounds necessarily, but will seriously help your sleep if that's your issue

When my first pair had the glue come loose on the shell of the ear piece, I tried using it and it made an intensely loud shrieking sound in my ear

Terrific sound just like I expect from Bose and superior noise canceling

Sound is good, but not great.

However, during my ride with subway in Berlin, with active NC there is a loud clicking sound when the doors close and it goes away if I turn off NC

True honest noise cancelling technology that works with an also great awareness mode, comfort that I have yet to find in any other in ear earphones and great sound.

I normally don't write reviews, but the amazing sound inspired me.

Sound is good, but not great.

When connected to iPhone and trying to listen to music there is an annoying clicking sound

Or, you can try an over-the-ear passive sound reducing ear muff for construction and gun firing and then use either a regular (i.e. non-noise reducing earbud) or a noise reducing earbud for music.

These deliver great sound

No loud snappy sounds when the drums start

The sound is really nice and rich

The audio quality is excellent, partly due to the noise cancelling and partly due to the well-tuned clear sound they produce.

Otherwise, I suggest saving the extra money and get the Bose sport set and enjoying the great sound!

Very distracting hissing sound in left ear

All were very nice with great sound

The sound is good and the sound cancellation is good.

The sound is great, and they cancel out and block more noise than their over-ear counterparts

The bass is _tight_ and not overwhelming, and there are decent high sounds for a Bose product

I bought these to suppress the sound of several noisy AC compressors on the roof of my apartment and

Excellent sound with the ability of these to completely block surrounding sounds

As expected, it makes great sounds but little bit uncomfortable with charging

Sound is fantastic.

Overall it's a smooth and natural sound, with slightly muted highs and bass that could use a bit more punch.

It's not the most powerful sound I've ever had, but the clarity it provides allows me to hear nuances to my

It takes a little bit to get usess to it sitting in your ear but excellent sound

They block out all noise and leave me with a wonderful quality sound

Quite amazing how well they isolate sound

With noise canceling on or off, the sound is amazing.

They are comfortable, convenient, portable, sound great, and have great noise cancellation

Quite amazing how well they isolate sound

The wireless ones (Bose QuietControl 30) work flawlessly and are much more convenient with better sound

the sound is horrible

For louder sounds like car horns, or jet engines from inside the plane, they will cut the sound, but not to the degree of a good noise cancelling headphone

I own the over ear set (QC25) too but, as great as they sound, they aren't comfortable for sleeping - I can't lean against them in an airline seat

The left earphone started producing muffled, blown out sound.

Overall, this is by far the best set of noise cancelling ear buds I have ever used, with better sound and noise cancellation than all but the best headphones.

The sound is phenomenal, the noise cancelling is a thing of beauty, and I use these every day

Great quality sound and build

Very comfortable and the noise=reduction capability is a s good as my older Bose over-ear pair.