Set up and use third-party Bluetooth accessories Select the device you want to use in the list of devices. If your device is meant for sound input (for example, a headset), click Input. If your device is meant for sound output (for example, headphones), click Output.
Select a Bluetooth audio device as your computer’s input or output deviceĬhoose Apple menu > System Preferences, then click Sound. OS X El Capitan: Set up Bluetooth audio devices
You can find these steps in the following articles: The main way to accomplish this is to first stop using the headphones as your iMac's output device (in System Preferences) and then use the AirPlay icon in Control Center to use the headphones with your iPhone. I see you're looking for an easy way to switch between audio sources when using your Beats Studio Wireless headphones. Thank you for contributing to the Apple Support Communities.
