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Power supplies·2026 · OCT
Isolated outputs2500mA DC9V

01Strymon · jack-by-jack math

How many pedals can the Strymon Ojai power?

5 isolated outputs and 2500mA of DC, checked jack by jack against 211 pedals at their own voltage.

Plan a board on the Strymon Ojai

02The short answer

Up to 5 pedals, one per output, from 2500mA of DC.

Built for: A compact board of up to five 9V pedals where every one can be a big digital pedal.

  • 196 of the 205 powered pedals in our database run on any jack here at their voltage.
  • 5 run at 18V, which it does not offer.
  • 4 pedals have no published draw: read the figure off the label and the calculator finds the jack that carries it.
  • 4 passive volume pedals take no jack at all.
  • The Eventide H90 Harmonizer runs from its own 12V adapter, off the supply.
  • The Electro-Harmonix Deluxe Memory Man runs from its own 24V adapter, off the supply.

03The jacks

Per-jack ratings as the manufacturer publishes them. A jack carries a pedal when it offers the pedal's voltage and its rating at that voltage is at or above the pedal's draw.

OutputJacksVoltagemA per jackPedals each jack carries
Jacks 1-559V500mA196 of 201
Total DC52500mA

Every output section is isolated, so a digital pedal on one jack does not share a ground with the pedal next to it. “Pedals each jack carries” counts the 201 powered pedals in our database with a published draw, each at its own voltage. Pedal figures are typical published draws; check each pedal’s label for its voltage and polarity before you plug in.

04What it cannot run

The pedals in our database this supply cannot run, highest draw first.

Not on this supply · 5

Run these from a supply with a 18V jack. Compare supplies.

05A real board on it

The calculator's example board (a tuner, a compressor, an overdrive, a distortion, a delay and a reverb), run on this supply.

Will not run

Draw
293mA
Available
2500mA
Headroom
2207mA
Outputs
6 needed, 5 here
  • Not enough outputs: 6 pedals need a jack and this supply has 5.

Open it in the calculator

Source

Per-jack ratings transcribed from Strymon’s published spec. Each of the five isolated outputs supplies 500mA at 9V, powered from the included 24V adapter. Strymon spec page.

Checked against that page on October 15, 2026.

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