Dallas Rangemaster Treble Booster vs Fulltone OCD
The Dallas Rangemaster Treble Booster and the Fulltone OCD are both pedals sharing transparent. The Dallas Rangemaster Treble Booster leans warm and sustaining. The Fulltone OCD leans full and dynamic.
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Blended from circuit-archetype lineage, dynamic feel, tone-signal overlap and tone-vector distance — the tone vector itself is derived from editorial description text, not a measured acoustic signal, so this reflects how similarly the catalog copy describes the two, not a lab measurement. Shown only within a gear class, and only where there's enough evidence to be meaningful.36% — somewhat different
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Genres both listings are associated with.- Hard Rock
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Derived from overlapping tonal signals across both listings.- transparent
Fulltone OCD
Fulltone · pedal
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$3558.02via Reverb
The Dallas Rangemaster Treble Booster is a single-knob germanium boost designed in London in 1965, built around a Mullard OC44 germanium transistor. Rather than a full-range boost, it emphasizes upper-midrange and treble frequencies above roughly 2.6 kHz, adding sweet, warm coloration and soft germanium clipping when pushed. Placed in front of a cranked valve amp, it tightens and brightens the signal and drives the amp into smooth, singing overdrive. It is famously associated with Rory Gallagher, Tony Iommi, Brian May, Eric Clapton, and Marc Bolan, shaping much of the late 1960s and early 70s British rock and early metal guitar tone. Unit-to-unit variation is high due to germanium transistor tolerances.
The Fulltone OCD, or Obsessive Compulsive Drive, is a popular overdrive designed by Mike Fuller that uses MOSFET clipping to deliver a tube-like, amp-in-a-box character. Its controls include Volume, Drive, Tone, and an HP/LP switch that toggles between a brighter, upper-midrange-forward British voicing and a flatter, more transparent American flavor. Known for firm low end, strong output, and exceptional touch sensitivity, it covers light, dynamic breakup through thick, saturated rhythm and lead tones while staying clear and defined. Many players use it as both a primary overdrive and a loud clean boost. It is widely used across blues, classic rock, hard rock, and indie, valued for its responsiveness to pick attack and guitar volume and its ability to push a tube amp harder while retaining note clarity even at maximum drive.
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Genres this gear is documented as being used in.- Metal
- Rock
- Blues Rock
- Classic Rock
- Blues
- Indie
- warm
- sustaining
- full
- dynamic
- bright
- mid-forward