The Voodoo Lab guitar pedal power cable is a must if youve got Voodoo Labs Pedal Switcher and Control Switcher, and Line 6s DL4 or MM4 digital modeling pedals, or an Eventide Factor, or certain Electro-Harmonix pedals. Smoothly rigging together a complex pedalboard can be a challenge. Thankfully, Voodoo Lab offers everything you need for your pedal power requirements. This cable sports 2.1mm and 2.5mm straight barrel connectors and reverse (center positive) polarity. If you have any of the pedals mentioned above, you need the Voodoo Lab guitar pedal barrel power cable.