> Likewise many people say they can't hear the noise ANC headphones produce - it seems likely to me that they're either in a too loud environment so it's masked

> Likewise many people say they can't hear the noise ANC headphones produce - it seems likely to me that they're either in a too loud environment so it's masked at all times, have hearing damage or both. On my old QC-35 I couldn't hear it, but it's pretty noticeable on the QC-45 I got after those broke.