> For the complete documentation index, see [llms.txt](https://docs.vdo.ninja/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-channels.md).

# \&channels

Specifies the number of output audio channels you wish to mix up or down to

Viewer-Side Option! ([`&view`](/advanced-settings/mixer-scene-parameters/view.md), [`&scene`](/advanced-settings/mixer-scene-parameters/scene.md), [`&room`](/advanced-settings/setup-parameters/room.md))

## Options

Example: `&channels=4`

| Value           | Description                     |
| --------------- | ------------------------------- |
| (integer value) | number of audio output channels |

## Details

Left and right is available for most users; channels 1 and 2

* Up to 6-channels is possible, if your output device supports it.
* On Windows, you might need to select 5.1 surround sound with your device in the Windows audio settings.
* On macOS, you might want to consider using SoundFlower, as it seems the most correct with its routing.

Designed to be used with [`&channeloffset`](/advanced-settings/audio-parameters/and-channeloffset.md).

Please see here for detailed testing results with different audio devices: <https://docs.google.com/spreadsheets/d/1R-y7xZ2BCn-GzTlwqq63H8lorXecO02DU9Hu4twuhuA/>

{% hint style="info" %}
If looking to set the number of input channels, rather than output, please see [`&inputchannels`](/advanced-settings/audio-parameters/and-inputchannels.md) instead.
{% endhint %}

## Related

{% content-ref url="/pages/-MZduK86bM7yuCikcbpF" %}
[\&channeloffset](/advanced-settings/audio-parameters/and-channeloffset.md)
{% endcontent-ref %}

{% content-ref url="/pages/-Mc\_o2CAhf-h1\_-c4t3E" %}
[\&inputchannels](/advanced-settings/audio-parameters/and-inputchannels.md)
{% endcontent-ref %}

{% content-ref url="/pages/DshDK8sygilhTyerTGPQ" %}
[\&playchannel](/advanced-settings/audio-parameters/and-channeloffset-1.md)
{% endcontent-ref %}


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