Originally Posted by
JetFlyer06
Look carefully, from what I understand the adapter is TSO'd, not the headset. If/when the batteries run out I believe you won't be able to hear any radio transmissions/intercom from what other people on this site have said. You wanna hope that doesn't happen on short final.
Actually the entire headset is TSOd. The QC2 is a headband and the adapter has an ear bud that continues to transmit. I've been told you don't even have to have the QC2 on for the headset to "work" now (I don't currently own the headset). I do know that the whole thing has been TSOd (with the TSO sticker) which includes the QC2.