Enter the 1990’s and Marshall introduces the Drivemaster, the Bluesbreaker and the Shredmaster to complement the Guv’nor distortion as overdrives. The Bluesbreaker was intended to model it’s respective amp counterpart, with the Drivemaster emulating a JCM800 and the Shredmaster being a high gain overdrive named for a certain musical trend at the time. The knobs on each of these pedals reflected Marshall’s classic amp settings with your standard, bass, treble, contour, presence and gain knobs with the gain stages already inherently varying from pedal to pedal. The Bluesbreaker had a lower gain stage than the Drivemaster, with the Shredmaster having the most output.