Voodoo Lab Pedal Power X4 Isolated Output Expander Kit - Compact

In this review the Pedal Power X4 Expander Kit is examined as a practical solution for players who need extra isolated 9V lines without replacing their existing supply. The bottom line: this kit is for gigging and pedalboard-focused guitarists who already own a compatible Voodoo Lab Pedal Power and want clean, high-current outputs in a tiny footprint. It delivers four additional isolated outputs with an innovative hybrid DC transformer design that promises audiophile-quality performance and zero added noise, all while mounting beneath low-profile boards.

Key Features

• Four isolated outputs: Adds four dedicated 9V high-current outputs so each pedal gets a stable, isolated feed without daisy-chaining compromises.
• High current capacity: Each output supplies up to 500mA, which covers hungry digital effects and active pedals that require more current than typical supplies provide.
• Hybrid DC transformer design: Uses exotic components and linear regulation to reduce noise and preserve the tonal detail of your rig.
• Direct compatibility: Connects to Pedal Power 3 X-LINK ports or any Pedal Power 12V output of 400mA or more for easy expansion of an existing system.
• Ultra-compact mounting: Small dimensions allow mounting under low-profile boards like Pedaltrain Nano and Metro to save valuable pedalboard real estate.
• Included accessories: Ships with power cables and 3M Dual Lock so installation is quick and secure on most boards.

Who It's For

The Pedal Power X4 is best for guitarists and bassists who already own a compatible Voodoo Lab power unit and need additional isolated 9V lines without changing their main supply. It suits players with several mid-to-high current pedals - such as multi-effects, digital delays, and preamps - who need up to 500mA per output.

Players who should look elsewhere include those without a Voodoo Lab Pedal Power or users who need a power brick with many built-in outputs; this expander is intended specifically as an add-on rather than a standalone multi-output hub.

Pros & Cons

Pros

• Compact form factor fits under low-profile pedalboards and preserves board space.
• High-current isolated outputs reduce noise and power-related interference for cleaner tone.
• Solid build quality and included mounting hardware make it easy to install and reliable on the road.
• Direct compatibility with Pedal Power 3 X-LINK and suitable 12V outputs simplifies integration.

Cons

• Not a standalone supply; requires a compatible Voodoo Lab Pedal Power or a qualifying 12V output to power the expander.
• Limited to four additional outputs, so players needing many isolated lines may still need a larger solution.

Specifications

Outputs	Four isolated 9V DC outputs
Output current	Up to 500mA per output
Compatibility	Powers from Pedal Power 3 X-LINK or any Pedal Power 12V output of 400mA+
Design	Hybrid DC transformer with linear regulation and optimized filtering
Mounting	Ultra-compact for below low-profile pedalboards; includes 3M Dual Lock
Includes	Power cables to connect pedals and mounting hardware
Origin	Made in the U.S.A.

Our Verdict

The Pedal Power X4 Expander Kit is a practical, high-quality add-on for existing Voodoo Lab users who need a few extra isolated 9V lines without sacrificing board space. Its audiophile-minded design and 500mA outputs make it especially good value for players running power-hungry pedals and seeking quieter operation on stage or in the studio.

Frequently Asked Questions

Can the X4 run by itself?
The X4 is an expander and needs to be fed from a Pedal Power 3 X-LINK expansion port or a Pedal Power 12V output rated at 400mA or more.

How much current does each output supply?
Each isolated 9V output can supply up to 500mA, suitable for many digital and active pedals.

Will it fit under a Pedaltrain Nano?
Yes, the ultra-compact dimensions are designed to mount below low-profile boards like the Pedaltrain Nano and Metro.