Guitar Pick-up Tone Extender
This design extends the basic sonic possibilities of an electric guitar without the use of any electronic effects. The expanded number of tone possibilities is brought about by mixing continuously-variable amounts of the output from each of the guitar’s pick-ups, along with switching the phase of each pick-up. This effectively gives an infinite range of tones as opposed to the five available for a normally switched set-up. This is not a project for the faint-hearted, however; it involves modifying the wiring to the guitar's pick-up coils and switches, and possibly the scratch-plate itself, depending on the chosen location for the replacement for the standard 0.25-inch (6.3-mm) jack connector.