No Options To Enable Or Configure Mono,Stereo,2.1,5.1,7.1 Audio

**Using the Juno Beta 2**

I've got a 5.1 surround audio output connected to my machine, but when going to enable 5.1 instead of the default Stereo, I find that there doesn't seem to be any place to do this. In GNOME Sound Settings, you can select a device and then choose the proper audio channels from a dropdown, but I don't seem to be able to find this here. Was this removed at some point?

Additional system info as it might be of use:
https://paste.ubuntu.com/p/43WrDkzpW4/

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