For pedals with higher power requirements, the Current Doubler Adapter combines the current of two outputs to power a single pedal. It is most commonly used in combining outputs 5 & 6 on a Pedal Power 2 PLUS to create a single 9V 500mA output. This adapter features two BLACK 2.1mm barrel plugs to a single GREEN 2.1mm jack for use with any standard power cable with a 2.1mm plug. Please note that this adapter will not combine the voltages of the original outputs. Only the current supply will be combined. Combines current 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