---
title: preferredOutputNumberOfChannels
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avaudiosession/preferredoutputnumberofchannels
---

# preferredOutputNumberOfChannels

The preferred number of output channels for the current route.

## Declaration

```swift
var preferredOutputNumberOfChannels: Int { get }
```

## Discussion

Discussion The value of this property indicates the preferred number of output channels selected using the setPreferredOutputNumberOfChannels(_:) method. To determine the actual number of channels, query the outputNumberOfChannels property.

## See Also

### Setting the number of output channels

- [setPreferredOutputNumberOfChannels(_:)](avfaudio/avaudiosession/setpreferredoutputnumberofchannels(_:).md)
- [outputNumberOfChannels](avfaudio/avaudiosession/outputnumberofchannels.md)
- [maximumOutputNumberOfChannels](avfaudio/avaudiosession/maximumoutputnumberofchannels.md)