---
title: baseClassID
framework: Core Audio
role: symbol
role_heading: Instance Property
platforms: [macOS 15.0+]
path: coreaudio/audiohardwareobject/baseclassid
---

# baseClassID

An AudioClassID that identifies the class from which the class of the AudioObject is derived. This value must always be one of the standard classes.

## Declaration

```swift
var baseClassID: AudioClassID { get throws }
```