Mad Professor Simble

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The ultimate in transparency, the Mad Professor Simble drive delivers the most organic overdrive you can imagine. Use it as the cleanest boost, for a little tube-like tone sweetene r, or a crunchy overdrive. The sensitivity of the Simble is unmatched and can be controlled with the Sensitivity Knob; tweak the rest of your tone with the Level, Accent, and Contour knobs. Show more