travfar
New Head-Fier
- Joined
- Dec 31, 2012
- Posts
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I recently got a pair of ANC9s. Overall, I love them. The noise cancellation works really well. One question I have though is when things are quiet and I have NC on, I hear low frequency booming. I really hear it in mode 1. Less so in mode 2. It's gone in mode 3. It's like the NC circuitry is trying to cancel noise but there's no noise to cancel. Is this normal?
