<!--
{
  "documentType" : "article",
  "framework" : "CoreAudio",
  "identifier" : "/documentation/CoreAudio/1494522-anonymous",
  "metadataVersion" : "0.1.0",
  "role" : "collectionGroup",
  "title" : "Anonymous"
}
-->

# Anonymous

## Topics

### Constants

[`var kAudioBoxPropertyAcquired: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioBoxPropertyAcquired)

[`var kAudioBoxPropertyAcquisitionFailed: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioBoxPropertyAcquisitionFailed)

[`var kAudioBoxPropertyBoxUID: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioBoxPropertyBoxUID)

[`var kAudioBoxPropertyDeviceList: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioBoxPropertyDeviceList)

[`var kAudioBoxPropertyHasAudio: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioBoxPropertyHasAudio)

[`var kAudioBoxPropertyHasMIDI: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioBoxPropertyHasMIDI)

[`var kAudioBoxPropertyHasVideo: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioBoxPropertyHasVideo)

[`var kAudioBoxPropertyIsProtected: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioBoxPropertyIsProtected)

[`var kAudioBoxPropertyTransportType: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioBoxPropertyTransportType)

[`var kAudioBoxPropertyClockDeviceList: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioBoxPropertyClockDeviceList)


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)