1. Download and install GroundControl CASTER
2. Go to “Settings > GroundControl Audio Devices”
3. Hit the “Add Device” button – this will create a virtual audio driver on your system (on the fly). you can rename it and set its channel count (if you want to send more than 2 channels between the apps)
If you don’t want any monitoring option from GroundControl CASTER, you can close the app and use the virtual driver you have just created. You will have zero latency when using this driver.
If you do want to monitor the audio stream in this virtual driver, you can do it via the GroundControl CASTER application interface – add an input track for the virtual audio device you created – “Ableton To Protools” in our example.
Note that when monitoring through Caster, the stereo channels 1&2 is usually correspond to the master output of the DAW you’r using.