I have the noise cancelling model, and can verify that it does cancel noise

As with any electronics product, I'm sure defective models make it past QC on occasion

HOWEVER, their slightly less expensive model DOES NOT have active noise cancelling circuitry.

Cowin should have better model # differentiation between their products.

While these are not the noise canceling model they do a superb job of blocking out ambient sound when they're playing music.

This model number

The Cowin E-7 feel more comfortable to my head but not entirely comfortable (I can wear them up to 2-3 hours straight before I feel pain to my ears).They sound terrible not only compared to my Stanton but also compared to my cheap AKG earbuds

Have no problem with cowin E- 7

These E-7's are outstanding