severely dampens the ambient noise -- making any internal sounds very noticeable (such as breathing and heartbeat and other body noises).

but they do a very good job at blocking ambient noise.

There isn’t any distortion and it does a good job of isolating ambient noise

They block some ambient noise and when music is playing, I can pretty easily tune out people talking in my 10' x 10' office at full volume (I have an office mate).

These are not the noise cancelling, however they do an excellent job at reducing the ambient noise by creating a solid seal around your ears

Great product, it arrived as described and works as it should.

Other wise I have been pleased with the overall performance

n’t feel like

And they are incredibly comfortable, not torturing my ears/head the way my last set of cheap-o headphones did

I po them o yesterday, and only the left side worked

Other wise I have been pleased with the overall performance