Sidetone (also known as microphone monitoring) allows you to control the amount of mic input that is routed back into your headset, so you can choose how much of your own voice and surroundings to hear.
The adjustment of the sidetone for the Arctis headsets is done inside SteelSeries Engine software on a PC/Mac.
*Photo shown above is for Arctis Pro Wireless headset.
*If you are experiencing a high pitched noise on your headset, please try disabling the side tone, or adjusting the dial (7P models) to around 50% and see if the issue persists. You can also adjust the side tone volume in the SteelSeries Engine.
To learn more about Sidetone and Chat Mix - Check out this LINK!