---
title: Audio Hardware Services Properties
framework: audiotoolbox
role: collectionGroup
role_heading: API Collection
path: audiotoolbox/1405208-audio-hardware-services-properti
---

# Audio Hardware Services Properties

Property identifiers that apply to HAL audio objects only when accessed via the Audio Hardware Services.

## Topics

### Constants

- [kAudioHardwareServiceProperty_ServiceRestarted](audiotoolbox/kaudiohardwareserviceproperty_servicerestarted.md)
- [kAudioHardwareServiceDeviceProperty_VirtualMainBalance](audiotoolbox/kaudiohardwareservicedeviceproperty_virtualmainbalance.md)
- [kAudioHardwareServiceDeviceProperty_VirtualMainVolume](audiotoolbox/kaudiohardwareservicedeviceproperty_virtualmainvolume.md)

## See Also

### Managing System Sound Services Properties

- [AudioServicesGetPropertyInfo(_:_:_:_:_:)](audiotoolbox/audioservicesgetpropertyinfo(_:_:_:_:_:).md)
- [AudioServicesGetProperty(_:_:_:_:_:)](audiotoolbox/audioservicesgetproperty(_:_:_:_:_:).md)
- [AudioServicesSetProperty(_:_:_:_:_:)](audiotoolbox/audioservicessetproperty(_:_:_:_:_:).md)
- [AudioServicesPropertyID](audiotoolbox/audioservicespropertyid.md)
- [System Sound Services Property Identifiers](audiotoolbox/1405268-system-sound-services-property-i.md)