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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 center speaker is selected in the 3D view and in the list of speakers below the view.](https://help.apple.com/assets/5C071F9A094622C60134C981/5C071F9B094622C60134C988/en_US/56cb63e8d9efe684abce9adcd170fee2.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_US/e88b67b7b3093567f3a1125396c36c4f.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.