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# isInputEnabled

A flag enabling audio input from the unit.

```
var isInputEnabled: Bool { get set }
```

## Discussion

The default value is <doc://com.apple.documentation/documentation/Swift/false>.

If your audio unit desires input audio, this property must be set to <doc://com.apple.documentation/documentation/Swift/true> and the value of [`canPerformInput`](/documentation/AudioToolbox/AUAudioUnit/canPerformInput) must also be <doc://com.apple.documentation/documentation/Swift/true>.

---

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