Audio Technica ATH-ANC7B

Pros: Great noice cancelling and good quality sound. When you turn on the noice cancelling you can hear the background noise dissapear. And then the RFI kicks in and you have to turn noise cancelling off!

Cons: Suffers very badly from Radio Frequency Interference.
Suffer from presure build up.

Summary: The noise cancelling on these Audio_Technica Quiet Point ATH-NAC7b headphones is indeed excellent, but there is a reason why they are so cheap. They suffer from RFI (Radio Frequency Interference) when in noise cancelling mode. Whenever a phone hunts for a new signal or negotiates with an access point having found one, you will hear a lot of interference.

I ware these on the train going home and as we go into and out of range of mobile signal masks these things go crazy. But that is as nothing compared with the frenzy that envelops them when you come out of the Tube/Metro/Subway.

I have been onto Audio-Technica's technical support line and they have admitted this is a known fault, and that there is no cure. Apparently then are coming out with an ATH-ANC9 model that is less prone - though the emphasis was on less.

It's a real shame because apart from that they are great.