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Audio MIDI Setup User Guide
for macOS Catalina
![The Audio Devices window showing an aggregate device in the 3D Isometric View. In the list of streams at the top of the window, a stream with 8 channels is selected. The centre speaker is selected in the 3D view and in the list of speakers below the view.](https://help.apple.com/assets/5C071F9A094622C60134C981/5C071F9B094622C60134C988/en_GB/daa8b848b997b6749b9631265dfd9005.png)
Create a surround sound environment
Connect external speakers to your Mac or other attached audio output device to create a surround sound environment in any room of your home.
![The MIDI Studio window showing various MIDI devices in Hierarchical View.](https://help.apple.com/assets/5C071F9A094622C60134C981/5C071F9B094622C60134C988/en_GB/a844e9c60e58de1829803a141b25ab44.png)
Visually describe your MIDI device configuration
After you connect your MIDI devices — for example, keyboards and sequencers — use MIDI Studio to lay out and show the connections between them.
To browse the Audio MIDI Setup User Guide, click Table of Contents at the top of the page.