---
title: kAudioUnitSubType_3DMixer
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kaudiounitsubtype_3dmixer
---

# kAudioUnitSubType_3DMixer

An audio unit that can have any number of input buses and one output bus. Each input bus can be mono, in which case it can be panned using 3D coordinates and parameters. Stereo input buses pass directly through to the output. Four-channel ambisonic inputs are rendered to the output configuration. The single output bus can be configured with 2, 4, 5, 6, 7 or 8 channels.

## Declaration

```swift
var kAudioUnitSubType_3DMixer: UInt32 { get }
```

## See Also

### Constants

- [kAudioUnitSubType_StereoMixer](audiotoolbox/kaudiounitsubtype_stereomixer.md)