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Tim Pierce "It makes your amp sound like it just was re-tubed"

The TrebleTool©,an enhanced treble booster based on the legendary Dallas Rangemaster

The TrebleTool is a Dallas Rangemaster extended with features that increase operating flexibility and solve short comings of the original design but do not change the original Dallas Rangemaster sound character. The TMF adjustment will let you dial in the right amount of bass content to adapt to different guitar types like a Strat or a Les Paul.

The standard version will even accept active input signals like a buffer, wireless system or EMG pickups, normally not possible on a Dallas Rangemaster type treblebooster. 

Like the original Dallas Rangemaster, the core of the TrebleTool is a single stage transistor preamplifier based on a selected NOS germanium transistor with the correct technical specifications combined with a high pass filter. It creates a transparent dynamic sound that will cut through the mix without being perceived as over the hill.


Germanium transistor A New Old Stock Germanium  transistor with the correct parameters for gain, leakage current, frequency & lowest noise


Gain control adjust output volume


Continuous variable range control (T.M.F.) Dial in the amount of low end with a specific guitar type or pickup combination


Tone control Adjust the amount of treble for a specific amplifier


The PaulSwitch® Robust true bypass footswitch to switch effect on/off & to avoid tone sucking in bypass operation


External power supply Providing the option to use an external power supply without inducing noise or changing the character of the sound.


Reverse and over voltage protection To protect the sensitive germanium transistor and keeping the pedal running for many years to come


Radio Frequency Interference (RFI) suppression Avoiding radio signal reception when using high gain setting in combination with turning down guitar volume

* Pre warning Battery low indication Giving the opportunity to changeover batteries before the effect stops working

* Impedance Conversion Interface (on/off) Converting an active input signal (EMG pickups, Wireless system) to a signal suited for the FuzzTool and thus retaining the character of the effect

* Extra Feature on the Standard Version

Dallas Rangemaster History

The main concept of the TrebleTool is based on the Dallas Rangemaster, a germanium transistor based treble booster developed around 1965 in London, UK by a company called John E.Dallas & Sons Limited. The Rangemaster was used to drive Tube Amplifiers into saturation because (high) gain Tube Amplifiers were not available during the 60‘ties. Famous guitar players who created their unique sound with a treblebooster are: Rory Gallagher, Eric Clapton, Ritchie Blackmore, David Gilmour, Bryan May and Tony Iommi.

Michael Thompson checking out the TrebleTool

Sam Vilo checking out the TrebleTool

TrebleTool standard Dallas Rangemaster Treblebooster

TrebleTool Standard € 299,- 
(Free WW shipping)

Dallas Rangemaster Treblebooster

Original 1960'ties Dallas Rangemaster

TrebleTool Junior Dallas Rangemaster Treblebooster

TrebleTool Junior € 219,- 
(Free WW shipping)

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