---
title: Audio Unit v3 Plug-Ins
framework: audiotoolbox
role: collectionGroup
role_heading: API Collection
path: audiotoolbox/audio-unit-v3-plug-ins
---

# Audio Unit v3 Plug-Ins

Deliver custom audio effects, instruments, and other audio behaviors using an Audio Unit v3 app extension.

## Topics

### Host App

- [Migrating Your Audio Unit Host to the AUv3 API](audiotoolbox/migrating-your-audio-unit-host-to-the-auv3-api.md)
- [Hosting Audio Unit Extensions Using the AUv2 API](audiotoolbox/hosting-audio-unit-extensions-using-the-auv2-api.md)

### Audio Units

- [Creating an audio unit extension](avfaudio/creating-an-audio-unit-extension.md)
- [Creating custom audio effects](avfaudio/creating-custom-audio-effects.md)
- [Incorporating Audio Effects and Instruments](audiotoolbox/incorporating-audio-effects-and-instruments.md)
- [Debugging Out-of-Process Audio Units on Apple Silicon](audiotoolbox/debugging-out-of-process-audio-units-on-apple-silicon.md)
- [Rendering Spatial Audio from Bluetooth headphones](audiotoolbox/rendering-spatial-audio-from-bluetooth-headphones.md)
- [AUAudioUnit](audiotoolbox/auaudiounit.md)
- [AUAudioUnitBus](audiotoolbox/auaudiounitbus.md)
- [AUAudioUnitBusArray](audiotoolbox/auaudiounitbusarray.md)
- [AUAudioUnitPreset](audiotoolbox/auaudiounitpreset.md)
- [AUAudioUnitV2Bridge](audiotoolbox/auaudiounitv2bridge.md)
- [AUHeadTrackingBinauralRenderer](audiotoolbox/auheadtrackingbinauralrenderer.md)
- [AudioUnitExtensionCopyComponentList(_:)](audiotoolbox/audiounitextensioncopycomponentlist(_:).md)
- [AudioUnitExtensionSetComponentList(_:_:)](audiotoolbox/audiounitextensionsetcomponentlist(_:_:).md)
- [AUAudioUnitFactory](audiotoolbox/auaudiounitfactory.md)

### Parameters

- [AUParameter](audiotoolbox/auparameter.md)
- [AUParameterGroup](audiotoolbox/auparametergroup.md)
- [AUParameterNode](audiotoolbox/auparameternode.md)
- [AUParameterTree](audiotoolbox/auparametertree.md)

## See Also

### Audio Units

- [Generating spatial audio from a multichannel audio stream](audiotoolbox/generating-spatial-audio-from-a-multichannel-audio-stream.md)
- [Audio Components](audiotoolbox/audio-components.md)
- [Audio Unit v2 (C) API](audiotoolbox/audio-unit-v2-c-api.md)
- [Audio Unit Properties](audiotoolbox/audio-unit-properties.md)
- [Audio Unit Voice I/O](audiotoolbox/audio-unit-voice-i-o.md)