---
title: outputBusses
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/auaudiounit/outputbusses
---

# outputBusses

An array containing the audio unit’s output connection points.

## Declaration

```swift
var outputBusses: AUAudioUnitBusArray { get }
```

## Discussion

Discussion Subclasses must override this property’s getter. The audio unit should return the same object every time it is asked for it, since hosts can install KVO observers on it.

## See Also

### Returning the Audio Busses

- [inputBusses](audiotoolbox/auaudiounit/inputbusses.md)