Source Audio Device
The Source audio device dropdown will display all inputs available on your computer, both hardware and virtual audio ones. Below you can see a Focusrite audio interface, with only channels 1 & 2 used as the source for the route.
![](https://static.helpjuice.com/helpjuice_production/uploads/upload/image/12551/direct/1716575974873-Screenshot%2B2024-05-24%2Bat%2B20.39.12.png)
Selecting devices that do not have enough channels available for the route from the dropdown, will display a grayed out message in the channel selection sub-menu for the device.