I am thinking of selling one of my three Bose A20 headsets and trying out the new David Clark DC 1XP. The Bose that I would sell has been very lightly used as it was for my daughter who grew up and moved. The headset does not have bluetooth, and is in the original Bose headset bag. Please note that the headset has a lemo plug, so it does require a matching plug in the aircraft, or an adapter. I think that $800 would be a fair price. PM if interested. Thanks