Allen&Heath MIXWIZARD WZ4 USB AUDIO - Manual (Page 8)

WZ 4 16:2 / WZ 4 12:2 / WZ 4 14:4:2 USB multichannel option application note AP8987 Issue 2
Checking the Driver Installation
Once the driver installation is complete, you will need to check that the Wizard 4 is being recognised.
To do this, connect the Wizard 4 to your Mac and then, from the file menu, select:
GO Utilities Audio MIDI Setup
The Audio Devices window will open automatically.
In the Audio Input section, the number
of channels should be seen as 16.
In the Audio Output section, the number
of channels should be seen as 2.
MAC Driver Installation