# \&channels

Viewer-Side Option! ([`&view`](https://docs.vdo.ninja/advanced-settings/mixer-scene-parameters/view), [`&scene`](https://docs.vdo.ninja/advanced-settings/mixer-scene-parameters/scene), [`&room`](https://docs.vdo.ninja/advanced-settings/setup-parameters/room))

## 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`](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-channeloffset).

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`](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-inputchannels) instead.
{% endhint %}

## Related

{% content-ref url="and-channeloffset" %}
[and-channeloffset](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-channeloffset)
{% endcontent-ref %}

{% content-ref url="and-inputchannels" %}
[and-inputchannels](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-inputchannels)
{% endcontent-ref %}

{% content-ref url="and-channeloffset-1" %}
[and-channeloffset-1](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-channeloffset-1)
{% endcontent-ref %}