power supply

On pedalboards, dedicated power supplies such as the Strymon Zuma or NUX Zeus Jr. provide multiple isolated, low-noise outputs so many pedals can run from one unit¹². Daisy chains of plugs can also power several pedals from a single supply³. Power supply design can affect tone: builders redesign supply circuits for sound quality⁴, fluctuating supply voltage can make a pedal feel responsive⁵, and supply sag can contribute to overdrive character⁶. Supply voltage matters too, since some pedals sound louder when run above 9 volts⁷.