---
title: AUAudioUnitBusType.output
framework: audiotoolbox
role: symbol
role_heading: Case
path: audiotoolbox/auaudiounitbustype/output
---

# AUAudioUnitBusType.output

An output bus.

## Declaration

```swift
case output
```

## See Also

### Constants

- [AUAudioUnitBusType.input](audiotoolbox/auaudiounitbustype/input.md)