Strymon Zuma R300 Power Supply

The Strymon Zuma R300 is the most advanced low-profile pedal power supply Strymon has ever built—delivering clean, rock-steady, isolated power for your 9V, 12V, and 18V effects pedals in an ultra-slim format that mounts easily under virtually any pedalboard. Engineered with dual-stage topology, optically isolated feedback, pre-regulated outputs, and multi-stage filtering, Zuma R300 ensures your pedals reach their full dynamic potential with zero added noise.

Designed for players who want maximum horsepower without sacrificing space, the Zuma R300 provides five high-current, fully isolated outputs, each capable of powering modern digital pedals effortlessly. With its built-in expandability, it also forms the foundation of a modular Strymon power ecosystem, allowing your board to grow without compromise.

Premium Features

Ultra-Low-Noise, Dual-Isolation Power

Two stages of all-analog isolation completely eliminate ground loop hum and AC line noise, ensuring the cleanest signal possible.

Ultra-Low-Profile Design

At only 1.18 inches (30 mm) tall, the Zuma R300 fits beneath most pedalboards. Built-in threaded mounting hardware makes installation simple and secure.

Five High-Current Outputs

• 4 × 9V / 500mA isolated outputs

• 1 × multi-voltage output:

  • 9V @ 500mA

  • 12V @ 375mA

  • 18V @ 250mA

Perfect for everything from analog overdrives to large digital processors.

Fully Expandable Power System

Connect a Strymon Ojai or Ojai R30 (sold separately) via the 24V Thru jack to instantly add more isolated outputs. Build a distributed power network that scales with your rig.

Worldwide Operation

Universal compatibility at 100–240V makes the R300 ready for touring anywhere in the world.

Specifications

• Outputs: 5 fully isolated outputs

• Output Power: Maximum 36W

• Connectivity: 24V Thru for expandability

• Includes:

  • 5 × Strymon pedal power cables (2.1mm center-negative)

  • IEC power cable

• Dimensions: 7.25" × 3.5" × 1.18" (184 × 88 × 30 mm)

• Weight: 0.9 lbs (400 g)

• Construction: Lightweight, rugged anodized aluminium

The Zuma R300 is ideal for compact boards, studio rigs, touring players, and anyone demanding ultra-clean, ultra-reliable pedal power in a slim, expandable package.