Vertex Battery Power SupplyWant a power supply that gets best possible tone out of your pedals? What if the answer is 9V batteries? Believe it or not, some of the most discerning tone conscious guitarists like Eric Johnson, Scott Henderson, Michael Landau, and Josh Smith (to name a few), all prefer cheap Dollar Store variety 9V carbon batteries over a DC power supply because of the sag and amp like quality they impart on overdrive, distortion, fuzz, and wah pedals. The Battery