Noise cancelling does still work, and the headphones are still usable, but the static is quite loud and annoying especially for the price.

But they sure knock out the ambient noise on planes.

Quite possibly the best noise cancelling headphones I've ever used

Excellent noise cancelling headphones.

I can still hear them through these, they are good at knocking out "white noise" like airplane engines (used them yesterday for a flight) but sharp noises come right through.

I'd heard that many judged Bose's headphones better at quieting ambient noise than other noise-cancelling headphones, but the difference is really dramatic, and these earbuds truly are almost as effective as Bose's world-beating QC25s in my comparison

, the only downside is the earphones need to be recharged for the noise cancelling to work

I still think QC20 is the best overall noise cancelling headphone in the market

I can believe how well they reduce white noise

These ear buds produce excellent noise reduction over a pretty wide frequency range as well as very good sound quality.

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

They do a great job cutting noise.

Pros- Great noise canceling: definitely points here because the noise canceling on these is amazing, even with no music

Even if there is loud noise in your environment, these reduce the sound enough that it feels like background noise.

The design on these is great, I love the idea of portable noise cancelling headphones that I can take on the plane without the additional bulk and they actually work

Superior sound quality, reasonably comfortable, and the noise cancelling works great.

Very good, but not great, noise cancelling on airplanes (my primary use).

Let me start by saying these are the most comfortable headphones and the best noise-cancelling technology that I have experienced.

Randomly, there was a fairly audible hissing noise in the pair I received

I bought these for use on my zeroturn lawnmower and the noise cancelling works amazingly well.

I bought these for use on my zeroturn lawnmower and the noise cancelling works amazingly well.

They isolate plane engines amazingly well, but again because they didn't fit well inside my ear that tended to accentuate the other noises - like people talking, babies crying, those little binging noises that places have when they turn on the seatbelt sign... all of those were highlighted and so even move disrupting.- After 18+ hours of planes/airports... they got a bit uncomfortable

The noise cancelling works wonders, but the right ear speaker died within two weeks of daily use

They need to be coupled to a pair of noise isolating foam inserts.

Although they had appeared to have good passive noise blocking in the store and I really liked the Bluetooth as well as slightly lower price, they were nowhere nearly good enough to block out the general din in the the airport terminal, and, in the plane itself they were virtually useless.

Static / Buzzing noise coming from Left ear bud.

Very comfortable and with great noise canceling

Not worth the 300 bucks, I got these for work, loud noises like a saw distort the speakers and make a loud crackle, I was really hoping that these were gonna cut all the noise out, which they do for reg stuff, but not what I was expecting for the price and Bose's rep

Kills white noise like wind and airplane engines.

You won't believe how well it reduces any noises, including construction noise or loud talking around you

All the loud airplane noise is

These earbuds help me focus on the call in spite of surrounding noise (reasonable

Although they had appeared to have good passive noise blocking in the store and I really liked the Bluetooth as well as slightly lower price, they were nowhere nearly good enough to block out the general din in the the airport terminal, and, in the plane itself they were virtually useless.

The noise cancelling works wonders, but the right ear speaker died within two weeks of daily use

Randomly, there was a fairly audible hissing noise in the pair I received

They are clear, crisp, comfortable and anyone who has heard Bose's noise cancellation knows it's the best in the business.

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 have terrible garbage truck noise outside of my apartment every night

I do wish there were more passive and active noise cancellation, because the data centers can sound like the airport sometimes.

It's not like noise isolating headphones that jam deep into your ear and simply block out all sound.

The noise canceling quality of these is unrivaled.

Does an excellent job cancelling noise

The noise canceling works

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.

Best noise cancelling phones ever!

I bought these so that I could study in silence around my loud classmates and roommate but these earbuds don't drown out enough noise

amazing noise cencelling, I can now hear music everywhere without hurting my ears

In the daytime the noise doesn't really bother me but it's the night time that gets me

I can still hear them through these, they are good at knocking out "white noise" like airplane engines (used them yesterday for a flight) but sharp noises come right through.

It's my feeling that better passive noise reduction is required for that type of noise

I can tell there is some kind of wire connection problem at the volume control module as it makes static noises when I wiggle it.

They virtually eliminate annoying noise if it's not too loud

That being said, the passive noise cancelling is awful, because they were the most poorly designed earbuds I've seen outside of Apple's own

They knock out the wind and road noise well while on straight noise cancelling and I can still hear sounds that I need to hear (engine RPM and emergency vehicles).

No more pain on my ears by wearing noise canceling headphones for long haul flights.

She bought some cheap noise cancelling earbuds and they didn't really work

Great noise cancellation but a bit bulky

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

The Bose QC20 are amazing noise cancelling headphones

it has some hiss noise and pushes a bit of pressure to my sensitive right ear.

The noise canceling option worked for 5 minutes, literally, and hasn't worked since

Great noise cancellation for flights

Any noise higher than 85 db damages your hearing, so this a good way to protect your ears and maybe your sanity

I fly 14 hr transpacific nonstop flights 6-8 times per year so effective noise cancelling earbuds are really important to me.

The noise canceling feature works like a dream and the sound quality from my device is top notch.

Awesome noise cancelling capability.

The noise canceling and headphones work on any audio device, but the inline control with its buttons and mic only work on Android devices

They do a great job of cancelling out the very loud road noise from the dual-sport/dirt bike tires I use.

The noise canceling option worked for 5 minutes, literally, and hasn't worked since

These are really nice the noise canceling works great, and they are very comfortable.

These do not work well in turbulent air, which seems to confuse the noise cancellation, causing them to produce very loud popping noises.

Great noise cancelling

I work in an open office with coworkers' desks just feet away and the noise from my coworkers can be very distracting at times.

The best noise cancelling headphone out there

Nice headphone nice de-noise system nice everything

I have an older model of Bose noise canceling headphones as well but this earbuds are much lighter and easy to carry and have better noise canceling

The ear muffs are inexpensive -- amazon has one for $18 for a 34+DB reduction -- and they truly isolate the noise

Excellent electronic noise cancelling

I tested both by switching on a loud air-conditioner in a small room, and found the Bose noise-cancellation removed far more than I expected of the ambient mechanical noise and hum; switching the QC20s on feels like entering a library, not like muffling a noise

Great noise cancellation but a bit bulky

They knock out the wind and road noise well while on straight noise cancelling and I can still hear sounds that I need to hear (engine RPM and emergency vehicles).

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