GHOST FIRE Pedal Power Supply GP5-SV1 - Compact Isolated Unit

In this review of the GHOST FIRE Pedal Power Supply GP5-SV1, the bottom line is simple: this tiny, five-channel isolated unit is aimed at guitarists who need a compact, reliable source of clean power for a small pedalboard. The GP5-SV1 stands out for its physical portability and fully isolated outputs, so players who worry about noise or pedal interaction will appreciate what it delivers. It is particularly useful for beginners and anyone building a minimalist rig who still wants short-circuit protection and an adjustable multi-voltage channel.

Key Features

• Compact and portable: The 3.2 x 3.2 x 1 in footprint and 0.6 lb weight make it easy to fit on tight pedalboards without cluttering space.
• 5-Channel fully isolated outputs: Each output is isolated to reduce interference and preserve the integrity of effects chains for cleaner tone.
• Independent short-circuit protection: Every circuit has its own protection so a fault on one output will not knock other pedals offline during a gig.
• Link interface for expandability: The unique Link Interface lets users combine this unit with a compatible model to expand to 13 total outputs using a DC cable.
• Adjustable multi-voltage channel: One channel supports selectable 9/12/18V to accommodate a wider range of pedals.

Who It's For

The GP5-SV1 is best for guitarists and pedalboard builders who prioritize a small footprint and reliable, noise-free power. Beginners, bedroom players, and touring musicians with compact boards will find the combination of isolated outputs and independent short-circuit protection particularly reassuring.

Players who need large numbers of outputs, on-board mounting hardware, or integrated power and switching features should look elsewhere or consider pairing this unit with the compatible expansion model to reach higher channel counts.

Pros & Cons

Pros

• Fully isolated outputs deliver clean, interference-free power for sensitive pedals.
• Very compact and lightweight, making it easy to place on small boards.
• Independent short-circuit protection protects the rest of the rig if one circuit fails.
• Expandable via Link Interface to increase total channel count when needed.

Cons

• Only five outputs on its own, so users with larger rigs will need the expansion option.
• The single adjustable channel limits simultaneous multi-voltage needs for some complex setups.

Specifications

Our Verdict

The GP5-SV1 is an excellent value for players who need a compact, reliable isolated power source for a small pedalboard. Its combination of clean isolated outputs, per-circuit protection, and a space-saving footprint makes it a practical choice for beginners and compact-rig users, while the Link Interface provides a clear upgrade path for growing setups.

Frequently Asked Questions

Can this unit power high-current pedals?
It provides isolated outputs suitable for many pedals and has been reported to work with power-hungry models, but check specific pedal current requirements against the supply's output ratings before use.

Will one faulty pedal shut down the whole board?
No. Each circuit has independent short-circuit protection so a fault on one output should not affect the others.

Can I expand the number of outputs?
Yes. The GP5-SV1 has a Link Interface that allows it to be connected to a compatible unit to reach up to 13 outputs via a DC cable.