Where should the headset have ANC? When I filter the gaming headsets by Active Noise Cancelling, the Sennheiser comes up. But when I look at the specification, I only see "Modern broadcast-quality noise-canceling microphone for crystal-clear communication", which only means that the microphone suppresses noise, but that does not mean that the headset has ANC! Am I reading the description wrong or is the headset incorrectly categorised?