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Bose A20® / A30® 6-Pin To General Aviation Headset Adapter - PA-89/A20 | Aircraft Spruce Canada
Bose Quiet-comfort 20 Acoustic Noise Canceling Headphones with Airline Adapter Kit - Pacific Hi Fi
Amazon.com: Saipomor QC45 Adapter Airplane Audio Stereo Jack Plugs for QuietComfort 2 QC3 QC15 QC25 QC35II QC35 SoundLink SoundLinkII AE2 AE2i AE2W and More Headset with 3.5mm Golden Plated Jack Plugs :