# \&mono

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))

## Details

If using [`&proaudio`](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-proaudio), this will retain the publishing benefits of [`&proaudio`](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-proaudio), while keeping the audio as mono instead of stereo.

Audio bitrates may be reduced from 256-kbps to 128-kbps, if not explicitly stated, in some cases.

{% hint style="warning" %}
In Version 22 `&mono` also works with Firefox.
{% endhint %}

To set the source to mono, see [`&monomic`](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-monomic).

## Related

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

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