The Eighteen Watt pedal is a Marshall in a Box circuit based on the Runoffgroove 18 Watt design. This pedal is designed to replicate the sound of the classic Marshall amp from the 60s. It features a simple circuit with one preamp stage, a volume control, a unique tone control setup, a phase splitter, and a single power stage. Unlike some other pedals, it does not have negative feedback, making it easier to achieve distortion.

One unique feature of the Eighteen Watt is its charge pump circuit. This circuit allows the pedal to take your input voltage from 9v to 18v, providing increased headroom and dynamic range.

In terms of controls, the Eighteen Watt has a volume control that adjusts the overall output level of the pedal. The tone control setup is also unique, allowing for precise shaping of the tone.

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