Voodoo Lab PPAY Voltage Doubler Adapter / Straight 4" For pedals with higher voltage requirements, the Voltage Doubler Adapter will combine two 9V or 12V Pedal Power outputs to create a single 18V or 24V output. This adapter features two BLACK 2.1mm barrel plugs to a single BLACK 2.1mm jack for use with any standard power cable with a 2.1mm plug. Ideal for MXR Flanger and Dime Distortion, Crybaby 535Q, and various Fulltone and Keeley products. Specifications Combines voltage of two Pedal Power isolated outs Compatible with all Voodoo Lab center-negative or center-positive DC power cables Custom-designed by Voodoo Lab for optimal performance with Pedal Power Nickel-plated barrel plugs secure solid connections between power supply and effects 22-gauge copper wire for superior current handling Coaxial design allows greater cable flexibility Durable PVC insulation ensures long cable life Voodoo Lab PPAY Voltage Doubler Adapter Canada Tone Design