I just got a fuzz face so im experimenting with the power options. I noticed a 9volt battery makes my fuzz face less crazy and not so much beastly sounding. The fuzz is more tamed with a 9volt and not as in your face. When I power the fuzz face with a power supply I noticed the fuzz is more balls to wall, in your face and more pronounced. I dunno lol. How do you power your fuzz?