I have a avt 50 with a Jekyl and Hyde pedal that offers seperate or combined overdrive and distortion. It has many ways to customize your sound. Sound quality is great. Two pedals in one that goes from slightly overdriven (blues ect) to insane (it will peal the paint off the walls) It has volume controls on both channels and works great for leads. I use it like this. Pedal off through the clean channel for mellow stuff like jazz, pedal off through the amp overdrive channel for a little more bite, Jeckyl side on (overdrive) fatter sound and volume boost for rock leads. Hyde side on for hard bitting leads with a volume boost. Both sides on to destroy your house and stun your band mates.