Others will hear what you hear which is annoying for them and you. I've tried tweaking all the sound threshold settings to no avail.
Also, my mic suddenly stopped working.
I've used my headset less than 200 times.
DumbreadI had the same exact problem and I ended up just selling the things. I also don't think the audio quality was any good, it was very low for what I was expecting. Mic was static at best till it just stopped working. Got steelseries arctis pro + gamedac and haven't looked back since.