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# AVAudioUnit

A subclass of the audio node class that, processes audio either in real time or nonreal time, depending on the type of the audio unit.

```
class AVAudioUnit
```

## Topics

### Getting the Core Audio audio unit

### Loading an audio preset file

[`loadPreset(at:)`](/documentation/AVFAudio/AVAudioUnit/loadPreset(at:))

Loads an audio unit using a specified preset.

### Creating an audio unit component

[`instantiate(with:options:completionHandler:)`](/documentation/AVFAudio/AVAudioUnit/instantiate(with:options:completionHandler:))

Creates an instance of an audio unit component asynchronously and wraps it in an audio unit class.

### Getting audio unit values

[`audioComponentDescription`](/documentation/AVFAudio/AVAudioUnit/audioComponentDescription)

The audio component description that represents the underlying Core Audio audio unit.

[`manufacturerName`](/documentation/AVFAudio/AVAudioUnit/manufacturerName)

The name of the manufacturer of the audio unit.

[`name`](/documentation/AVFAudio/AVAudioUnit/name)

The name of the audio unit.

[`version`](/documentation/AVFAudio/AVAudioUnit/version)

The version number of the audio unit.


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