Transformer isolated power allows you to run up to 8 pedals noise-free. Features four outputs that are switchable to run at 9 or 18 volts delivering 100 mA in either setting, two high current outputs offering 9 volts at 250 mA (great for digital pedals), and two 9 volt outputs at 100 mA with sag controls, dropping the voltage down to around 4 Volts, or anywhere in between. Includes specialty cables that allow you to "jump" outputs together to power 18 and 24 volt pedals.