The Electronic Audio Experiments Longsword is undoubtedly a loyal party member on the eternal quest for your ideal op-amp drive circuit. Getting somewhat "Hero's Journey" on us, EAE brings forth a dense and complex op-amp narrative to dissect and come to new overdriven conclusions.

Six primary controls shape its tone and behavior. Volume sets overall output level, while Drive determines the amount of gain applied across cascading stages. Low, Mid, and High knobs provide active EQ adjustment, allowing precise control over frequency response. The Boost knob governs the output level of the onboard boost circuit, functioning independently or stacked for additional drive and saturation.

Two toggle switches further expand its flexibility. The Shift switch adjusts the center frequency of the midrange, shifting the EQ focus between tighter, cutting tones and fuller, rounded voicings. The Diode switch offers symmetrical, asymmetrical, or diode-lifted clipping options, each imparting a distinct character—ranging from compressed and articulate to open and raw.

Two footswitches complete the control layout. The Engage switch activates the primary overdrive circuit, while the Boost switch toggles the secondary gain stage for extra volume or grit on demand. Together, they allow seamless transitions between clean boosts, subtle drive, and fully saturated distortion.

As one of the mainstay Electronic Audio Experiment pedals, the Longsword delivers on its reputation for bold and versatile overdrives.

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• Op-amp overdrive design
• Independent boost effect
• Three-way clipping diode selection switch
• True bypass footswitching
• 9-volt DC center negative power operation