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Mad Professor Twimble

Mad Professor


Twimble gives you both the Simble Overdrive and the Simble Predriver in one enclosure. Simble Overdrive gives you the overdrive sound of highly coveted Dumble Overdrive Supreme. Simble Predriver is a preamplifier, booster, compressor and upper harmony enhancer in one. Both pedals have been fine-tuned an optimized to work together.

  • Controls:
    Sensitivity: Controls the amount of distortion and compression. Sensitivity goes from totally clean Tweed sound to higher gain. In 12 o'clock there are Blackface-type overdrive sounds and toward 5 o'clock the sound goes almost to Big Muff territory. Regardless of the amount of gain Simble cleans up excellently with guitar's volume control.
    Level: Controls output volume level.
    Accent: Adjusts pick attack and brightness. Accent control affects the signal before it is distorted. You can define which areas of the tone you want to emphasize and distort. At 7 o'clock the control does not affect tone at all. This is a similar setting that can be achieved with Dumble's Jazz switch. Towards 5 o'clock Accent control works like Dumble's Rock/Mid Boost switch. What separates Simble's Accent control from Dumble's switches is the fact that Simble's control is variable. There are limitless different settings you can experiment with so each player can find their own unique sounds behind it.
    Contour: Adjusts the amount of high end. Comes after distortion in the pedal's internal signal chain. Balances the harmonic overtones.
    Hot/Cool Switch: Sets the amount of boost produced by the Predriver. Hot position gives you more boost, Cool position is more subtle. Hot position adds a slight mid boost.
  • Power requirements: 2.1 mm 9 V DC centre negative power supply or 9 V battery. 10 mA.
  • True bypass

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