Yeah, but as Gary pointed out you CAN do this with a headset mic. It's all in VOCAL CONTROL. You don't have to back off a mic in order to do this. The same thing can be done just by simply teaching yourself how to do it (if you're willing to learn). Mastering this can make your performance stronger as well.

I've seen tons of talented musicians (using a standard mic) sing without having to back off of the mic.. They had good vocal control (these weren't major recording artists either). In college I was blown away by some of the undiscovered talent on campus.., some of the best singers I've met in my life were in college.

Zuki, you can do this with a head set mic. As stated you can also adjust the distance between your mouth and the mic itself. You do what works for you of course as we all have a different approach to it.