It's quite old and annoying problem I every time forget to share and maybe it's already solved a long time ago.
But I didn't find this issue with search "MasterIT"

Everytime I load MasterIT I hear very loud short peep. It's extra brutal sound when I work with heightened volume

Is there any solution for it? Am I using unfixed .sys files or smth?
Thanx a lot for Your advices! I love MasterIT, but this nuance is a bit disappointing.