Sound check on "Starting soon" stream in Studio mode?

[Krusty4President]

Hi.
How can I check the audio levels of my guests before we go live on live stream while I have a "Starting soon" - scene is streaming?
While that starting soon scene is active, only the audio meters for that scene is visible. I would at least like to be able to see the meters for the inactive chat channel before it is transitioned to "active".
To sum it up, preview the audio in the scene in the preview window (when in Studio mode)

 

[JVRaines]

Audio audition is needed in OBS. For now, you could use the Audio Monitor plugin to create a monitor filter on the source, directed to a non-program output, and watch the level in the Audio Monitor panel.