Replacement control module down cable for Bose A20 aviation headset. This cable runs between the headset boom microphone and the control module. Bose made two versions of this cable for the A20 headset. Select the correct version for your headset based on manufacture date:Bose A20 manufactured from 2010: GEN1 A20 2010-2014Bose A20 manufactured from 2015: GEN2 A20 2015-2023Review the control module images above and select the correct A20 down cable for your specific headset model. GEN 1 has the 3 piece connector for the first generation A20 models and Gen 2 has the two piece connector. Repair your headset at your convenience and reduce downtime and repair costs. Made for Bose A20 Bluetooth and non-Bluetooth models. Features:Preinstalled connectors for quick and easy installationShielded for greater EMI resistanceCable only. Control module not includedEasy installation instructions on our blog Q&AQ: How difficult is this to install? Are there Instructions? It is extremely easy to install. You can find installation steps on the Hobbs Flyer blog here:https://hobbsflyer.com/blogs/newsQ: Can I send my headset to you for installation? Yes. You can find details about our repair program on our website. About Hobbs FlyerHobbs Flyer is a pilot-owned and operated aviation component manufacturer and retailer based in Minneapolis, Minnesota. We focus on bringing affordable, modern, and insanely comfortable aviation headsets and accessories to the aviation community. Visit our website to learn more.