The Mad Doctor Stutter is not a square wave tremolo. It is an automatic kill switch machine that cuts the signal at controllable intervals.

The RATE knob controls the speed rate of the ON/OFF switching adjustable from really really slow to super super fast, while the RATIO control slews the amount of ON vs. OFF. With the RATIO knob maxed there is less on and more off and gets rad and blippy. Back the RATIO knob off and it results in more ON signal and less OFF.

Matt has had lots of dudes tell him that this is the pedal they have been searching for for years. It also has an expression pedal input so you can change the speed rate on the fly making for some very interesting and unique sounds.

4.7″ x 3.7″ x 1.18″ enclosure, true bypass switching, common 9v center negative BOSS style power input and battery snap. Power supply not included.

Please note the bulk of what we sell is MADE IN THE USA and as a result is not subject to tariffs etc. With respect to items that are not Made in the USA, we cover any tariffs on our end.