<!--
{
  "availability" : [
    "iOS: -",
    "iPadOS: -",
    "macCatalyst: -",
    "macOS: -",
    "visionOS: -"
  ],
  "documentType" : "symbol",
  "framework" : "AudioToolbox",
  "identifier" : "/documentation/AudioToolbox/kAudioSessionProperty_Mode",
  "metadataVersion" : "0.1.0",
  "role" : "Global Variable",
  "symbol" : {
    "kind" : "Global Variable",
    "modules" : [
      "Audio Toolbox"
    ],
    "preciseIdentifier" : "c:@Ea@kAudioSessionProperty_PreferredHardwareSampleRate@kAudioSessionProperty_Mode"
  },
  "title" : "kAudioSessionProperty_Mode"
}
-->

# kAudioSessionProperty_Mode

A read/write `UIInt32` value that specifies the audio session mode.

```
var kAudioSessionProperty_Mode: Int { get }
```

## Discussion

An audio session mode is a key that identifies a set of device audio configuration details, such as whether or not the device performs automatic gain adjustment on incoming audio. A mode refines the configuration provided by a category ([`kAudioSessionProperty_AudioCategory`](/documentation/AudioToolbox/kAudioSessionProperty_AudioCategory)).

The available modes are described in [Audio Session Modes](/documentation/AudioToolbox/1618405-audio-session-modes). The default mode is [`kAudioSessionMode_Default`](/documentation/AudioToolbox/kAudioSessionMode_Default).

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)