Voodoo Labs' Reverse Polarity Voltage Doubler Adapter is perfect for players who use pedals with higher voltage requirements. The adapter combines the voltage of two 9V or 12V outputs to create a single 18V or 24V output and reverses the polarity, allowing users to keep their power supply instead of buying a new one.
Power Supply Connector: 2 x 2.1mm straight barrels (black)
Pedal Connector: Jack for 2.5mm straight barrel plug (red)
Polarity: Reverse (center negative)