High Horsepower, Low Profile.
Zuma R300 is the highest horsepower, most technologically advanced low profile effects pedal power supply.
You get clean, rock-steady power for your 9V, 12V and 18V effects pedals in a pedalboard friendly, expandable package, giving you room to grow.
Zuma R300’s ultra-low profile design means that it can fit under just about any pedalboard.
Dual-stage topology, pre-regulated outputs, optically isolated feedback, and advanced multistage filtering result in a power supply that allows your pedals to achieve their highest possible dynamic range.
Dual isolation.
Zuma R300’s all analog circuitry offers two stages of isolation, completely eliminating ground loop and AC line noise issues.
Your pedals sound like they were designed to sound!
Ultra-Low Profile.
Zuma R300’s ultra-low profile design means that it can fit under just about any pedalboard.
With built in threaded hardware, mounting to your board is simple.
Never run out of outputs.
Have a growing rig? Zuma R300 is part of an expandable system.
Add more outputs by connecting a Strymon Ojai or Ojai R30 with the 24V Out jack.
12V and 18V option.
Do you have a pedal that requires 12V or 18V? Zuma R300 has you covered.
One channel has selectable 9, 12, or 18V output voltages.
World tour ready.
Playing gigs all around the world? No need to purchase separate power supplies for your international tour.
Zuma R300 has automatic worldwide power compatibility built-in.
Whether you’re on 120V, 240V, 100V, or any variation in between, Zuma R300 will deliver clean, reliable power to your pedals.
Strymon Zuma R300 Power Supply Features:
• 5 high-current, fully isolated outputs with center-negative polarity.
• 4 dedicated 9V outputs (500mA).
• 1 adjustable output offers 9V (500mA), 12V (375mA), or 18V (250mA) DC options.
• 500mA per 9V output powers nearly any pedal.
• 5 pedal cables included.
• IEC cable included.
• 24V Thru jack allows connection to Strymon Ojai or Ojai R30.
• Dimensions: 7.25" x 3.5" x 1.18".
• Weight 0.9 lbs.
Specs
| Type | Effect Power Supply |
| Condition | New |
| Input | 120V AC |
| Outputs | 4 X 9V DC (500mA each) |
| Accessories | Power Cables |
| Manufacturer Warranty | 1 year |
| Country of Origin | United States |
FREE SHIPPING
- Free shipping within Canada.
- Free shipping to the USA.
- Free shipping on international orders over 520$.
Visit the Shipping page for more.
Fast Delivery
- Canada : 1 - 2 business days
- USA : 1 - 2 business days
- Rest of the world: 3 - 5 business days.
Hassle-Free Returns
You have 45 days to test your new gear. If you choose to return it, we’ll send a full refund. It’s that simple: no bogus restocking fees or charges.
Visit the Returns page for more.
Frequently Asked Questions
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How can I tell if an item is in stock? +
Each product page shows an availability status.
• In stock items are ready to ship.
• Out of stock items are currently unavailable.
You can enter your email to be notified when an item is back in stock.
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Where are you located? +
We’re based in Blainville, Quebec, Canada.
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When will my order ship? +
Orders placed before 12 PM EST ship the same business day.
Tracking details are sent shortly after purchase.
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How much does shipping cost? +
Most orders ship free to Canada and the US.
International orders ship free on purchases over $520 CAD.
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Which shipping methods do you use? +
Orders ship via UPS Expedited by default.
For faster delivery, you can select UPS Express Saver at checkout.
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How long does shipping take? +
Typical delivery times are:
• Canada: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• USA: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• International: 3–5 business days with UPS Expedited, 2–3 business days with UPS Express Saver
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Which payment methods do you accept? +
We accept all major credit cards and PayPal.
Financing options are available through Klarna and RBC PayPlan.
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Do Canadian customers pay sales tax? +
Yes. Sales tax is applied based on your province of residence:
• Alberta: 5%
• British Columbia: 5%
• Manitoba: 5%
• New Brunswick: 15%
• Newfoundland and Labrador: 15%
• Northwest Territories: 5%
• Nova Scotia: 14%
• Nunavut: 5%
• Ontario: 13%
• Prince Edward Island: 15%
• Quebec: 14.975%
• Saskatchewan: 5%
• Yukon: 5%
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Do USA customers pay import fees? +
Yes. Starting August 29, 2025, all US-bound shipments will be subject to duties, taxes, and brokerage fees.
These charges are determined by US Customs and collected by UPS at delivery.
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Do international customers pay import fees? +
Yes. International shipments may be subject to duties and taxes.
These charges are set by the destination country’s customs authority and collected by UPS at delivery.