Throw away your tube screamer. Truck loads of sweet creamy overdrive have arrived. The more you turn it up the better it sounds.
The Interstellar Overdriver is a real overdrive pedal blasting your amp with your sound. The knob works giving a slight boost all the way counterclockwise to a beautiful harmonicly rich overdrive maxed out. It is designed to work the same way as old tube amps - the more you turn it up, the better it sounds.