# Audio Mixer

> Reference information about the Unity AudioMixer class and its UI.


**The Audio Mixer window displays an arrangement of four Audio Groups. Each Audio Group has its own set of three buttons marked S, M, and B for soloing, muting, and bypassing the group respectively.:**
![](/api/media?file=/engine/6000.3/media/images/AudioMixer2.png)

## Properties

| ***Property:*** | ***Function:***                         |
| --------------- | --------------------------------------- |
| S Button        | Soloing the group.                      |
| M Button        | Muting the group.                       |
| B Button        | Bypassing all the effects in the group. |

When you select **Add** you can select from a list of effects that can be applied to the group.


**The list of effects that can be applied to an Audio Group from the group's Add button.:**
![](/api/media?file=/engine/6000.3/media/images/AudioEffectList.png)