Not all effect pedals run off 9 volts, and for these oddball units there’s the Iso-Pump Voltage Converter. Designed to work specifically with the PA9 Power-All, the Iso-Pump takes 9 VDC and converts it to 12, 18, or 24 VDC, selectable via an external switch. With the Iso-Pump pedals requiring 2 batteries, pedals with internal vacuum tubes, and many digital units can be powered directly off the PA-9 without the need for a separate power supply. The IP-1 can also be used to get more headroom out of certain overdrives. Best of all, the IP-1 features our proprietary Ground Hound ground isolation technology which allows use of pedals with opposing ground configurations to be powered off the same series power supply!