Rangemaster Treble Booster

The Rangemaster wasn't a distortion pedal in itself, but by boosting treble and upper mids into British tube amps, it created the foundation of the overdrive family tree. Eric Clapton’s Beano tone, Brian May’s singing leads, and Tony Iommi’s early Sabbath riffs were all shaped by it. Its philosophy, using a pedal to push an amp into overdrive, directly inspired clean boosts like the EHX LPB-1 and laid the groundwork for the Tube Screamer and Klon Centaur. Nearly every “transparent” or “amp-pushing” pedal owes something to the Rangemaster.