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# allowedAudioSpatializationFormats

The source audio channel layouts the audio renderer supports for spatialization.

```
var allowedAudioSpatializationFormats: AVAudioSpatializationFormats { get set }
```

## Discussion

The default property value is [`multichannel`](/documentation/AVFoundation/AVAudioSpatializationFormats/multichannel), which tells the player to spatialize any decodable multichannel layout. Setting the value to [`monoStereoAndMultichannel`](/documentation/AVFoundation/AVAudioSpatializationFormats/monoStereoAndMultichannel) tells the player to spatialize any decodable mono, stereo, or multichannel layout. When this property value is [`monoAndStereo`](/documentation/AVFoundation/AVAudioSpatializationFormats/monoAndStereo) the player attempts to spatialize content tagged with a stereo channel layout (two-channel content with no layout specified as well as mono).

This property isn’t key-value observable.

> Important:
> It’s incorrect to render binaural recordings with spatialization. Content tagged with a binaural channel layout ignores this property value.

---

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