Volume control does not work with Multi-Output Device

[antnythr]

Hi, this is probably a pretty niche issue... I've got two Dell displays with speakers, and BetterDisplay Pro works great for controlling volume on them.

I just discovered that MacOS has an app called Audio Midi Setup which has allowed me to use the speakers on both monitors at the same time by creating an aggregate virtual device. When I create this new "Multi-Output Device" and set it as the output device in sound settings, BetterDisplay loses the ability to control the volume of the output.

Any chance there's an easy way to get this working?

[waydabber]

Yes, you can configure volume control syncing for the two displays + override the audio device name for one of the displays to match the name of the multi-output device so the app knows it should control the volume of that display when this output device is set as default.