Keeley STAHLHAMMER Distortion is a hard hitting distortion pedal with no equal at Keeley Electronics. For cranked British amp sounds, this unique pedal design delivers. Keeley has combined classic high gain amp distortion and added a tube amp style EQ to give you a wealth of tones. This unique structure has two modes of operation – High Gain/Tube Saturation switchable from the right side of the pedal. The three tone controls, Bass – Middle – Treble, give you a fantastic range of amp sounds that you will be both familiar with and find easy to dial in.