---
title: AudioToolbox Constants
framework: audiotoolbox
role: collectionGroup
role_heading: API Collection
path: audiotoolbox/audiotoolbox-constants
---

# AudioToolbox Constants

## Topics

### Constants

- [kAudioUnitConfigurationInfo_AvailableArchitectures](audiotoolbox/kaudiounitconfigurationinfo_availablearchitectures.md)
- [kAudioUnitConfigurationInfo_MIDIProtocol](audiotoolbox/kaudiounitconfigurationinfo_midiprotocol.md)
- [kAudioUnitConfigurationInfo_MigrateFromPlugin](audiotoolbox/kaudiounitconfigurationinfo_migratefromplugin.md)

## See Also

### Reference

- [AudioToolbox Structures](audiotoolbox/audiotoolbox-structures.md)
- [AudioToolbox Enumerations](audiotoolbox/audiotoolbox-enumerations.md)
- [AudioToolbox Functions](audiotoolbox/audiotoolbox-functions.md)
- [AudioToolbox Data Types](audiotoolbox/audiotoolbox-data-types.md)