Mad Professor Ruby Red Booster Straps and for over 40 years

and for over 40 years the Big Muff Pi has been defining the sound of rock guitar

with a minimum of 300mA of current

and an EXP jack enables the player to control pitch and glissando with an expression pedal

The SSR’s sound is exceptional with a clean signal but was specifically designed to work equally well with the tougher performance requirements of distorted tone

and when driven

Mad Professor Ruby Red Booster Straps and for over 40 yearsThe boosters are based on the BJF Little Red Trebler and Red Rooster Booster, connected in that order and with a master volume control. You can use the pedal as a treble booster, a clean boost or an overdrive unit or any combination of the above. Also, it can be used with or without the buffer.