Finding the correct polarity as well as the potentiometer resistance, of an expression pedal can be difficult. But having the correct polarity and resistance can mean the difference between an effect being fully modulated or modulated at all. So, this list is provided to help in that area. Much care has been taken in putting the list together, but no responsibility is accepted for its correctness. It is suggested to contact the manufacturer of a device for accurate information.

A list of controllable effects is also found here

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