Strymon Ojai power supply — blue aluminum housing with five isolated 9V outputs

Strymon Ojai Power Supply

The Strymon Ojai is a compact high-end pedalboard power supply designed to deliver clean, stable and isolated power to effects pedals. It is a crucial foundation for any serious blues pedalboard, where noise, headroom and signal integrity directly affect tone.

Manufacturer and Model Background

Strymon is known for premium-grade effects and power solutions focused on studio-quality performance. Unlike cheaper daisy-chain power supplies, Strymon designs its units to eliminate noise, ground loops and interference. The Ojai was introduced as a smaller, expandable alternative to the larger Zuma power supply. It provides five fully isolated 9V outputs at 500mA each, using high-frequency switching technology for efficiency and low noise. The unit is still in production and widely used by professional guitarists who require reliability and clean power on stage and in the studio.

Outputs 5 × isolated 9V at 500mA
Isolation Fully isolated — no ground loops between pedals
Technology High-frequency switching — low noise, high efficiency
Housing Compact aluminum — professional grade
Expandable Links to Strymon Zuma for more outputs
Status In production — widely available

Why This Matters in Blues

In blues, tone is extremely sensitive to dynamics and subtlety. Noise or interference in the signal chain can destroy clarity and feel. Players like Stevie Ray Vaughan and John Mayer rely on clean signal paths where every nuance of playing comes through. A high-quality power supply like the Ojai ensures that overdrives, compressors and modulation pedals operate at their best without introducing hum or unwanted artifacts.

What Respected Blues Guitarists Did With It

While players like Stevie Ray Vaughan used simpler power solutions in the past, modern blues guitarists have moved toward isolated power supplies to maintain signal quality in more complex pedalboards. Artists such as Joe Bonamassa and John Mayer use advanced pedalboard systems where clean power is essential for stacking multiple effects. The philosophy remains the same — protect the integrity of the guitar signal.

Sound Profile

A power supply does not shape tone directly, but it has a major indirect impact. The Ojai provides extremely low noise operation. This results in a cleaner background, tighter response and more consistent pedal behavior.

Noise floor Extremely low. Clean background across all pedals.
Overdrive behavior More defined and articulate. No voltage sag or interference.
Delays Remain clear without unwanted noise in the repeats.
Dynamic response Improved consistency. Pedals react predictably at all volumes.
Strat interaction More clarity and articulation from single-coil pickups.
Les Paul interaction Low-end definition preserved when stacking gain.

What Makes It Special

The key feature is fully isolated outputs. Each output is electrically separated, preventing ground loops and noise bleed between pedals. This is critical when combining multiple gain stages. The high current output of 500mA per port ensures compatibility with both analog and digital pedals.

Another major advantage is expandability. The Ojai can be linked to other Strymon units like the Zuma, allowing a scalable power system that grows with the pedalboard. Build quality is also exceptional, with a compact and robust aluminum housing designed for professional use.

Why Gerbman Uses It

Gerbman's pedalboard includes multiple gain stages and tone-shaping pedals. In such a setup, clean power is essential. The Ojai provides a stable and noise-free foundation, allowing pedals like overdrives, compressors and modulation effects to perform at their full potential.

It supports stacking, which is central to his blues tone, and ensures that the signal remains clear even in complex setups. This is not a "tone" pedal, but it is one of the most important components in achieving consistent tone night after night.

Rarity and Availability

The Strymon Ojai is widely available and still in production. Classification: common but professional-grade. It is considered a standard choice for serious players rather than a rare or collectible item.

Variants and Alternatives

  • Strymon Zuma — larger version with more outputs and selectable voltage
  • Strymon Ojai R30 — version with selectable voltage outputs for 12V and 18V pedals
  • Voodoo Lab Pedal Power series — boutique alternative with a long track record
  • Harley Benton PowerPlant series — budget-friendly isolated power option

Hear this gear in action.

Watch Gerbman Live Book the Band View EPK