Amazon.com: Airfrex Bluetooth Adapter and Wireless Audio Receiver with Microphone and 2.5mm Jack for Sennheiser HD598 / HD598Cs / HD598SE / HD595 / HD599 / HD559 / HD569 / HD579 / HD518 / HD558 Headphones : Electronics
POYATU For Sennheiser HD598 Wireless Bluetooth Adapter Wireless Bluetooth Speaker Adapter For HD 598 599 579 569 Receiver aptX - Price history & Review | AliExpress Seller - POYATU Official Store | Alitools.io
POYATU aptX HD598 Bluetooth Adapter For Sennheiser HD598 HD598CS HD598SE HD598SR Wireless Adapter Receiver Bluetooth Cable Cord - AliExpress Consumer Electronics
Broke the bank today for a pristine Sennheiser HD598 : r/headphones