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# AVAUPresetEvent

An object that represents a preset load and change on the music track’s destination audio unit.

```
class AVAUPresetEvent
```

## Topics

### Creating a Preset Event

[`init(scope:element:dictionary:)`](/documentation/AVFAudio/AVAUPresetEvent/init(scope:element:dictionary:))

Creates an event with the scope, element, and dictionary for the preset.

### Configuring a Preset Event

[`scope`](/documentation/AVFAudio/AVAUPresetEvent/scope)

The audio unit scope.

[`element`](/documentation/AVFAudio/AVAUPresetEvent/element)

The element index in the scope.

[`presetDictionary`](/documentation/AVFAudio/AVAUPresetEvent/presetDictionary)

The dictionary that contains the preset.


---

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