Here's what ProAnalog say about the MKIV:
The MKIV series of fuzz-drives were designed by Scotty to fill the large gap in the pedal world for both types of players, the ones who love overdrive and the ones who love fuzz.
The MKIV series of pedals are truly unique and original designs not found anywhere else on the market that bridges that sonic gap between fuzz and overdrive so many players are craving for today! Combining both the Drive and Attack allows the player find his own unique tone and voice, from a warm boost to vintage crunch to full out high gain fuzz distortion and sustain.
The blue colored MKIV Vintage fuzz drive is voiced for the player that prefers a 1960s styled tone and feel, featuring select germanium and silicon transistors in a hybrid design that is 100% hand built by Scotty himself that have true bypass switching and Blue water clear LED.
- Level: Volume
- Attack: Lets you dial in the amount of Fuzz that you want.
- Drive: Lets you dial in the amount of transistor-based overdrive that you want.