Are they noise cancelling? Or just volume limiting?
1077316
Just Volume limiting. But due to their great cupping of the ear and their nice padding, I would say they do cancel quite a lot of noise.
676239
Not really, they're not exactly noise canceling; on louder volumes, you can keep out noise
453498
Yes. It's true they aren't noise canceling, but they do a pretty good job as far as I can tell. My parents complain that I can't hear them calling if I have them on, so that gives you some idea :-)
1207655
These are not noise canceling headphones. You need noise canceling headphones to mitigate external sounds.
1669525
They aren't noise-canceling headphones, as in they don't have "Active Noise Control" (http://en.wikipedia.org/wiki/Active_noise_control) but when I put them on, things definitely get much more muted.
730128
The other people who answered obviously know nothing about the product. It says on the Sennheiser website they have "up to 26 dB noise suppression". (http://en-us.sennheiser.com/earphones-high-end-hifi-stereo-passive-noise-reduction-ie-80)They have very, very good noise reduction. I can hardly hear anything other than whatever music I'm listening to or whatever game I'm playing with these in.
502517
Frances, I wouldn't say that that they are noise can celling if thats what you are looking for, but since they completely incase my ear, I can't hear anything.
1424546
Yes... its probably background noise... they are not very good but do provide a small amount of improved hearing. You get what you pay for.
129882
There is no noise cancellation at all so I imagine there is a lot of leakage. To be honest I will never use them except as a last resort they are that weak.
914828
its not noise canceling, its volume control. it limits how loud the headphone volume can get to avoid eardrum damage in kids
976686
Not total cancellation. They block out most noise, but no they don't offer active noise cancellation.
1397287
They are not active noise-canceling but regardless, I can't hear a thing of the outside world when I have them on.
1229961
It will depend on the volume level. They are not noise cancelling but do keep out some of the ambient noise. Stay alert and stay safe.
488141
These have noise isolation padding so when you have it at certain volume you can barely hear outside noise. Even on some lower volume or no volume you can tell the difference. I can hear others talking with them on no sound but it's almost as if they are surpresed
1480407
Based on my limited use I doubt they will block loud or even moderate music. That's why I immediately returned them for a refund.
694619
They isolate sound pretty well, and pretty soon I will be getting replacement ear pads from beyerdynamic, which are said to feel better, and provide a bit better sound isolation. I will let you know more when I get them.
1267987
I'm glad you note "noise REDUCTION" because these are not true "noise-cancelling" just because they cover the ear and block out sound to some extent. Noise cancelling is an extra white noise sound that plays throughout use.