Thanks for the video, but I have some familiarity with Audio Midi Setup. Again I'm unable to control the master volume of songs, iTune, Youtube, etc. coming from the Mac when the Helix is plugged-in (Helix Audio in's and out's) while the headphones plugged into Helix.
With Helix plugged in, I go to the top right corner and select speaker, and a drop down window opens, I have several selections (External Headphones, Mac mini Speakers, External Speakers, etc), When I select Helix Audio, the volume scroll bar at the top of that drop down window becomes grayed out.and locked in the full high position. It was shared that you could adjust that volume; however, I can not.
In system preferences, under Helix Audio, it says "The selected device has no volume controls". I get that I can't control the Helix Volume through the OSX, but why am I also locked out of the Master volume for Big Sur?
The video suggest making an aggregate device, but that still does not address my issue; namely, the Master volume in Big Sur is too hot even when adjusting volume of songs, iTune, Youtube, etc. It just overpowers my instrument.
I may just bypass the Helix audio driver and run through an interface i.e. Focusright. This way I should retain master volume of Big Sur.