PedalCurrent drawVoltage
Buzz v2 Bass Drive60 mA9vDC, center negative
Everest II 9vDC: 150 mA
12vDC: 100 mA
9-12vDC, center negative
Olympic MkIIIS Bass Preamp650 mA12vDC, center negative
Prism II9vDC: 150 mA
12vDC: 100 mA
9-12vDC, center negative
Stages Dynamic Drive9vDC: 180 mA
12vDC: 140 mA
9-12 vDC, center negative.
Internally boosted/regulated to +/-18vDC.
Twin MkIIS Preamp650 mA12vDC, center negative

Seymour Duncan
Signal Cheyne