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Power Supplies

Never worry about power again.

When we set out to design a line of effects pedal power supplies, we had one overarching goal in mind: to make sure you never have to worry about power again. 

ZumaZuma R300Ojai R30, and Ojai are the highest horsepower, most technologically advanced effects pedal power supplies of their kind.

Hear your pedals, not your power.

Dual-stage topology, pre-regulated outputs, optically isolated feedback, and advanced multistage filtering ensure your pedals will achieve their highest possible dynamic range while being as noise-free as possible.

Each individually isolated, ultra-low-noise output provides a staggering 500mA of current, meaning the days of not having enough current for those high powered pedals are over.

Strymon Power Supply Family — Zuma, Zuma R300, Ojai R30, Ojai

How the Strymon System Works

Zumas are self-contained units that plug directly into an outlet using a standard IEC connection. The Ojai side of the family needs 24V of power, which it gets from a Strymon PS-124 adapter, or from connecting to a Zuma’s 24V accessory output. 

This allows you to power additional Ojais from a Zuma, giving you additional isolated outputs for growing boards.

Strymon Power Supply System Diagram


9 individual 500mA outputs (2 adjustable 9/12/18V).
Perfect for large or growing boards.
6.8″ x 3.3″ x 1.8″ (1.25lbs)

Zuma R300

5 individual 500mA outputs (1 adjustable 9/12/18V).
Ultra-low profile design.
7.25″ x 3.5″ x 1.18″ (0.9lbs)

Ojai R30

5 individual 500mA outputs (2 adjustable 9/12/18V).
Small but versatile.
5.1″ x 2.3″ x 1.15″ (6oz)


5 individual 500mA outputs (9V).
Perfect for small boards.
3.2″ x 2.3″ x 1.3″ (4.7oz)

Expand Your Strymon Power System

Ojai R30 Expansion Kit

Power adapter not included. 
Requires existing Strymon power system.

Ojai Expansion Kit

Power adapter not included.
Requires existing Strymon power system.

Learn More About Our Power Supplies

Want to learn more about the engineering behind our power supplies? Check out the video below to hear Strymon co-founder/senior analog engineer Gregg Stock and analog engineer Josh Forbes talk about what went into designing Strymon’s power supplies.

The Right Power for Your Pedals

Want to know if our power supplies will power your pedals? Click here to learn how to determine what kind of voltage, current, and polarity your pedals need and how to power them with our power supplies.

How To Mount Your Power Supply

All of our power supplies are lightweight and easy to mount to just about any pedalboard. Click on your power supply below for instructions on mounting it to your board:

Zuma — Zuma R300 — Ojai R30 — Ojai

Power Supplies White Paper

Check out our power supplies white paper to learn more about the research and development that went into making the most powerful and noise-free power supplies you can buy. Read it here.