The Voodoo Labs 2.1mm Current Doubler Adapter Cable combines current from two isolated Pedal Power outputs to deliver up to 500mA to high-demand pedals, featuring nickel-plated barrel plugs and 22-gauge copper wire for reliable connections. Compatible with all Voodoo Lab center-negative or center-positive DC power cables, this custom-designed adapter uses a coaxial construction for flexibility and durability. Perfect for powering demanding effects, it merges two outputs into a single 9V supply without combining voltages—only current is doubled.