Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: NC does not work
Review: The noise cancellation function did not work. When you switch it on you get some hissing sound, but no noise reduction. I did check on low frequency noise; moreover, I picked two headphones in the store (another one was Philips hn 110) and the other one did the job. So, I know how the sound should change when switching on/off. Of course, there is always a chance that it was a defective unit.
