The Dallas Rangemaster is the most famous treble booster effect pedal, and it was the first pedal of its kind. This effect pedal was responsible from some of the most famous ’70 rock tones: Eric Clapton in Cream, Jimmy Page in Led Zeppelin or Brian May in Queen. Unlike other treble boosters, the Rangemaster has a really sweet sound thanks to its germanium transistor. To avoid any polarity issue with your other pedals, in this circuit we’ve used a negative ground. That means that you’ll get the same tone from your Rangemaster Treble Booster and power it from a standard negative power supply, instead of having to use an isolated positive power supply!
The Rangemaster Treble Booster only has one knob, but it’s more than enough to create a wide tone palette. As the pedal is touch-responsive, you can get a whole new tone simply by rolling back your guitar’s volume knob! While it had its origin on the need for boosting the high frequencies in the typical dark British amp sounds, now the Rangemaster Treble Booster is really useful to get a brighter tone and avoid any highs loss present in long wires.
Download here the manual for the Rangemaster Treble Booster: