never really used it! The pedal I speak of is my ZVex Super Duper 2 in 1. My first "boutique" pedal, purchased for me by my father a few years back while I was very sick. I used to use it to blow my friends amps up and as a super loud clean boost, but now I've totally rediscovered it and it's my #1 "always on" pedal. It just adds such a cool quality to my entire rig. Makes the amp sound more lively. Its been a great pedalweek for me, but this thing tops it off, believe it or not! Anyone else a SD 2 in 1 fan??? Also, just wondering... if I just use one side, am I basically just using a Super Hard On?