Fulltone Ranger Treble Booster

A Treble Booster in the Tradition of Legendary British Circuits

The Fulltone Ranger follows the great tradition of germanium treble boosters popularized in the late 1960s, designed to awaken a tube amp, tighten the low end, and emphasize harmonics. This type of effect has become a cornerstone of many classic rock tones: placed before an already driven amp, it adds presence and "cut" in the mix that transforms crunch into a singing drive.

Fulltone approached this Ranger with the artisanal method that built the brand's reputation: component selection, attentive listening, iterations, adjustments, and repeated playing tests until achieving a result consistent with high manufacturing standards. The goal is clear: to offer a treble booster inspired by a Rangemaster but with ergonomics and power supply suited for modern pedalboards.

For Whom, Which Styles, and In What Contexts?

The Ranger is aimed at both intermediate and advanced guitarists who want to sculpt their attack rather than simply "add gain." It excels in classic rock, blues-rock, hard rock, and any context where the guitar needs to remain clear in a band mix without unnecessarily boosting the bass. It's also an excellent choice for fans of Brian May or Tony Iommi tones, where a targeted boost helps the amp sing and thicken.

In live settings, it serves as a formidable "mix cutter": you gain presence without disproportionately increasing perceived volume. In the studio, it becomes a placement tool: ideal for bringing out a rhythm guitar track or adding precision to a solo. On a pedalboard, it is often placed at the very start of the chain (before overdrive/fuzz) to shape what follows, but it can also work after certain distortions to refine brightness and definition.

Controls, 6-Position Selector, and Stage-Oriented Design

The heart of the Ranger is its 6-position selector offering six tonal signatures. The two "Rangemaster 1" and "Rangemaster 2" positions provide a clearly treble booster-oriented base, with character variations to suit the amp, pickup type (single-coil or humbucker), and desired saturation level. The other positions explore boost nuances, from more cutting to more balanced, to avoid a "too bright" effect depending on your setup.

An important highlight: the proprietary power supply design. Germanium circuits with reversed polarity are often tricky to power in modern environments. Here, the Ranger accepts any standard power supply from 9V to 18V (center negative), simplifying pedalboard life. It also remains practical on the road thanks to its integrated battery compartment, despite a compact enclosure.

Fulltone also adds a transistor bias adjustment option, a detail that matters on a germanium circuit: adjusting the bias optimizes response, texture, and grain stability according to your taste and environment. Finally, the True Bypass ensures an unaltered signal when the pedal is off, and the top-mounted jacks promote clean wiring on tight pedalboards. The amber LED completes the package with clear stage visibility.

Sound

The Fulltone Ranger delivers what you expect from an excellent treble booster: a "closer," more aggressive guitar feel, with a sharper attack and harmonics that naturally stand out. The low end remains tighter, avoiding muddiness in an already saturated amp, and emphasizes the area where the pick really speaks. The result: chords gain clarity, riffs authority, and solos projection.

Depending on the selector position, you can go from a boost clearly focused on upper mids, ideal for making a tube amp break up, to more balanced settings that retain more body. Dynamics are key: the Ranger responds finely to guitar volume and playing intensity, allowing you to shift from a tight crunch to a more singing drive without crushing everything. Placed before an overdrive or fuzz, it can also transform the saturation texture by making it more precise and "singing."

Technical specifications

Effects	Boost	Type	sector
Technology	Analog	Use	electric guitar
Format	Pedal	Color	Grey

Input	6.35mm Jack	Dimensions	12 x 7.4 cm
Output	6.35mm Jack	Weight	428 g
Accepted voltage	9V to 18V	Power supply	not included
Manufacturing	100% hand-made in Los Angeles