With the release of the GPX 6000 along with the Vanquish and Equinox, thought I would provide an updated summary of several known compatible Bluetooth APTX-LL headphones of various types, features, and price points for consideration thanks to other forum members (e.g., F350 Platinum) here who have played guinea pig and purchased/verified compatibility and performance: Avantree solid all around BT APTX-LL phones, over the ear type: https://www.amazon.com/Avantree-Wireless-Headphones-Com