dwarfcraft devices power struggle price : $95.00

the power struggle is a power starving utility device which can be used to coax wild sounds out of mundane pedals. the power struggle intercepts the electricity intended for your effects unit and allows you to determine how much power is allowed to the circuit via the rotary knob on the face of the unit, or via an expression pedal. it accepts center negative and center positive power supplies, and puts the power out through a 2.1mm "standard boss style" center negative plug. a 9v battery can be used to light the indicator led.

there are youtube videos of the power struggle here and here.

for more info including a description of the controls, check out the user manual.