Noise cancellation is not perfect but handles white noise very well.

Noise cancellation is outstanding.

This is actually a well functioning active noise cancellation!So how do these sound?

Noise cancellation is impressive, I have used on multiple flights between the USA/Europe/Asia and every time I take them off on the flight I am shocked by how much louder it is on the plane without them on

Noise cancellation is pretty decent

NOISE CANCELLATION (Winner: HD1)

Even in a crowded hotel bar, the noise cancellation worked quite well

Noise cancellation is great.

The active noise cancellation blocks out distractions; screaming children, bother me not.

The noise cancellation is a level above, and the signal doesn't crap out when walking through the city

Noise cancellation is very good as well

The noise cancellation is also very good (not as good as Bose, so if the main reason for your purchase is noise cancellation, choose Bose)

The noise cancellation works well and I'm very much looking forward to using them on my next flight.

Noise cancellation not stellar like Bose, but more than sufficient

First of all, the noise cancellation is not very powerful at all, and you can still hear basic things around you that you would not with other noise cancelling devices

The battery life is unparalleled and the sound quality/noise cancellation is great.

The noise cancellation is good, can still hear a little, the sound is super.

so I viewed active noise cancellation as a bonus, not as a priority.

The noise cancellation is very good but not as good as Bose QC35

The QC35's noise cancellation was great (albeit a little uncomfortable) but the headphones became muddled if they were too loud and in too intense of certain music (i.e. intense classical or even bass heavy acapella)

Noise cancellation not stellar like Bose, but more than sufficient

The active noise cancellation blocks out distractions; screaming children, bother me not.

I work in an open floor plan and the active noise cancellation is great.

The average consumer seems to like the Bose sound signature: other Bose headphones and speakers also have this sound signature and Bose sells millions of them (kind of like McDonald’s sells millions of hamburgers).All of the professional reviews say that Bose has better noise cancellation than the other models in this group, but the noise cancellation in the other models is still pretty good.

The noise cancellation works better than I had expected even in noisy environments (i.e. data center, airliner, etc.)

Love the noise cancellation.

Noise cancellation is excellent as well - we have a noisy central heater and my wife always watching tv in the same room

After two weeks the noise cancellation stopped working and never comes back

Noise cancellation is terrific.

The active noise cancellation is unobtrusive (no hiss) but effective

The noise cancellation is very effective

The noise cancellation is good, but they do not match Bose's noise cancellation.

Noise Cancellation is good for an already quite environment

The active noise cancellation is excellent

Comfortable, great sound, premium feel, long battery life, great isolation, and great noise cancellation

Noise cancellation is good though background noise is not completely removed

The noise cancellation is pretty good

Great sound quality and very good noise cancellation, plus easy bluetooth connectivity.

That being said, I also own the Bose QC 35s (and a bunch of other headphones).I prefer the QC35s ANC (active noise cancellation), interface and comfortability

Noise cancellation isn't the best, but it's still great at eliminating common room white noise like ventilation systems

Flying with these headphones has been great and the noise cancellation, combined with the great battery life, works quite well and has made flying just a bit better

The noise cancellation really isn't very good

Noise cancellation is good but not the best I've experienced

I wanted good looks, easy portability, good build quality, great sound, and noise cancellation that works.

Superb sound quality, Great active noise cancellation

Noise cancellation is not very good on

The noise cancellation is not as great as I would have hoped, but much better than my last pair of headphones which were "on ear" and did not really block anything.

The noise cancellation is quite good but not perfect

Some fault the B&O for having finnicky touch controls; these have no touch controls and only 2 buttons: on/off, vol up/down

In terms of high-quality plastics mixed with metal bones, they are more a peer to the less expensive Bose and Sony; the B&O clearly wins in build and material quality

so if you already have good headphones you may not be as blown away by these as I

I generally love Sennheiser products b/c of their quality and reputation, but the awful wireless performance of this headset especially at this price is unacceptable

The noise cancellation is okay, but nowhere near the levels of the Bose QC35 or Sony WH1000.Overall there's much better options for this price that sound almost as good, or even better.

The mid-bass hump I experienced in passive wired mode was completely gone and smoothed out as soon as you enter active mode

These are every bit as good as I'd hoped they would be

these headphones sound almost as good as my wired B&O H6 2nd Gen headphones

It's not as good on these as on any of their competitors, but it doesn't suck

Comfortable to wear for 8+ hours on flights or when working as long as you adjust the cups properly and don't have them putting pressure on your ear

However, they don't sound nearly as good as the Sennheisers and also will leave your scalp in a world of pain after 30 minutes.

The earcups aren't as soft as on other products though, and for an over-ear the cups are surprisingly small, so if you have huge ears you may want to try these before you buy

So if you're buying them because they sound better than the Bose, don't bother as they are larger and won't play high quality files

I have also noticed that the noise cancelling does not seem to be as effective as with the 550s, but I do not notice as much wind buffeting.

The noise cancellation is not as great as I would have hoped, but much better than my last pair of headphones which were "on ear" and did not really block anything.

Those who prefer a warm, focused, bass-forward sound will prefer the Sonys

I generally love Sennheiser products b/c of their quality and reputation, but the awful wireless performance of this headset especially at this price is unacceptable

Having an amplifier in advance also helps because l did get more out of this headphone(l don't recommand buying a amp just for this headphone because it's not worth it).

Having an amplifier in advance also helps because l did get more out of this headphone(l don't recommand buying a amp just for this headphone because it's not worth it).

The noise cancellation is okay, but nowhere near the levels of the Bose QC35 or Sony WH1000.Overall there's much better options for this price that sound almost as good, or even better.

The mid-bass hump I experienced in passive wired mode was completely gone and smoothed out as soon as you enter active mode

These are every bit as good as I'd hoped they would be

these headphones sound almost as good as my wired B&O H6 2nd Gen headphones

It's not as good on these as on any of their competitors, but it doesn't suck

Comfortable to wear for 8+ hours on flights or when working as long as you adjust the cups properly and don't have them putting pressure on your ear

However, they don't sound nearly as good as the Sennheisers and also will leave your scalp in a world of pain after 30 minutes.

The earcups aren't as soft as on other products though, and for an over-ear the cups are surprisingly small, so if you have huge ears you may want to try these before you buy

So if you're buying them because they sound better than the Bose, don't bother as they are larger and won't play high quality files

I have also noticed that the noise cancelling does not seem to be as effective as with the 550s, but I do not notice as much wind buffeting.

The noise cancellation is not as great as I would have hoped, but much better than my last pair of headphones which were "on ear" and did not really block anything.

Those who prefer a warm, focused, bass-forward sound will prefer the Sonys

n’t had any issues chagring other than trying to decipher the LED indicator color meanings, but after quick consult of the Sennheiser website and instruction

so if you already have good headphones you may not be as blown away by these as I

Some fault the B&O for having finnicky touch controls; these have no touch controls and only 2 buttons: on/off, vol up/down

In terms of high-quality plastics mixed with metal bones, they are more a peer to the less expensive Bose and Sony; the B&O clearly wins in build and material quality