Diode Selector Toggle: Switch between Germanium (Ge) for a softer, warmer, more rounded response with tamed highs, or Silicon (Si) for a brighter, tighter, and more modern high-output crunch.

"More" Control: Adjusts the bias of the transistor to take you from a nearly clean boost to a singing, medium-gain overdrive. Note: It is normal to hear a little crackle or noise when turning this knob as it adjusts the transistor bias.

Tone Control: Provides full command over treble frequencies. It delivers a flat response when positioned around 3 o'clock, cuts high frequencies when swept counterclockwise, and boosts them when turned clockwise.

Level Control: Offers massive volume adjustment, outputting up to nearly double the volume of the original Speaker Cranker. Unity gain lands between 10 and 12 o'clock depending on your chosen diode setting.

Flexi-Switch Technology: Equipped with true bypass and proprietary switching that functions as both a standard latching switch (quick press) or a momentary switch (hold down). 

Power Flexibility: Operates on standard 9V DC power but can be safely run at up to 18V DC for increased clean headroom and tighter dynamics.