Comments about Coby Coby CV-E195 Noise Cancelling Earphone:
First of all, I could not get these earbuds to stay in my ear. When I finally shoved them in, they were uncomfortable.
Secondly, when the unit is "on", there is an awful hissing sound. When listening to music, I hear no difference with regards to background noise or not. Also, when I turn the unit on, the volume gets VERY loud in comparison to when it's off. If I turn the volume down on the unit (or on my music player) I hear the hiss again.