Roland delivered one of its earliest effects pedals with 1974’s AP-5 Phaser, followed in ’75 by the wild and wonderful Jet Phaser AP-7, featured here.

The phrase “greater than the sum of its parts” certainly describes the Jet Phaser. It combined a fuzz-like gain stage with a phaser – in that order – to create a sound attainable from nothing else, unless you include latter-day copies of the AP-7 circuit. Prior to its arrival, many guitarists placed their phase pedals before their fuzz, for a more subtle distortion effect.