When using a USB ZED mixer (Mini, 2-Bus & 4-Bus) on Mac OS X with an audio application that doesn't allow you to select a separate input and output, it is necessary to create an aggregate driver. This will be required with applications such as Pro Tools, Logic & Cubase.
An aggregate driver allows you to combine audio inputs and outputs from multiple devices and combine them into one single driver.
- Launch Audio Midi Setup from the Mac Utilities folder,
- Under 'Audio Devices' hit the plus key, this will create an aggregate device.
- Rename it accordingly.
- Place ticks in both 'USB Audio Codec' boxes in the right-hand windows, you will see that one of the drivers has inputs and the other outputs.
- Launch your audio software,
- Select the driver you created above,
- You will now be able to access the inputs and the outputs of the ZED.