Yes, Nova 7P does support ChatMix, but there is a catch. ChatMix on this headset will work on a PC only.
There are two wheels on the Nova 7P headset. The one on the left side, with the microphone, is for volume. The one on the right side, without the microphone, is to control the sidetone. Sidetone is a small amount of your own voice that you will be hearing back in the headset while speaking.
While Nova 7P does not have a physical, dedicated ChatMix dial on the headset itself, the ChatMix can be controlled via Sonar. ChatMix will work on PC only.
The Arctis Nova 7P is compatible with PC, but it is designed to be used on PlayStation as a primary platform. Unfortunately, PlayStation does not allow third party devices to control ChatMix, therefore, we decided to go for a sidetone wheel.