If you’ve ever wondered how a chord on one electric guitar can sound so wildly ... The overdrive pedal provides a transparent, clean boost to your sound without overwhelming it, all the while ...

Apart from tiny boost circuits, a tremolo is generally the simplest effect pedal you can make. All you’ll need to do is vary the amplitude of the guitar’s signal at regular intervals.

This takes care of all the audio processing, but the hard work for a guitar pedal is actually the enclosure and mechanicals – it’s a hard life for stage equipment. For the foot pedal input ...