Numerous individuals on the r/steelseries subreddit have commented on the [lack of] volume control for the microphone, stating that it is too quiet for proper usage.
Here’s a couple threads on the subject:
A couple users have mentioned unplugging, restarting or resetting the wireless base transmitter or updating the firmware to resolve the issue.
We invite the community to contribute their experiences, including any issues they’ve have or ways they’ve managed to resolve it here and we will monitor the situation and update our review accordingly.