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Electro-Harmonix Manuals & User Guides

Electro-Harmonix (EHX) is a legendary NYC-based manufacturer of guitar effects pedals and vacuum tubes, famous for the Big Muff Pi and Memory Man.

Tip: include the full model number printed on your Electro-Harmonix label for the best match.

About Electro-Harmonix manuals on Manuals.plus

Electro-Harmonix, widely known as EHX, is a pioneering American manufacturer of electronic audio processors and musical equipment. Founded in 1968 by Mike Matthews in New York City, the company has been instrumental in defining the sound of rock, jazz, and funk with its innovative effects pedals.

EHX is best known for iconic stompboxes such as the Big Muff Pi fuzz, the Deluxe Memory Man analog delay, and the POG polyphonic octave generator. Beyond their extensive line of pedals for guitar, bass, and vocals, Electro-Harmonix is also a major supplier of rebranded vacuum tubes for amplifiers. The company continues to operate from New York, combining vintage analog heritage with modern digital technology to serve musicians worldwide.

Electro-Harmonix manuals

Latest manuals from manuals+ curated for this brand.

ehx SWELLO Attack Envelope Pedal User Manual

October 2, 2025
ehx SWELLO Attack Envelope Pedal Specifications Power Supply Requirements: Voltage: 9VDC Current: 100mA Polarity: Center-Negative Product Information The Electro-Harmonix Swello is a compact pedal designed to create polyphonic swell and…

ehx Canyon Echo Multi Function Digital Delay User Manual

May 22, 2025
Ehx Canyon Echo Multi-Function Digital Delay Specifications Power Supply Requirements: Voltage: 9VDC Current: 100mA Polarity: Center-Negative Welcome to the Electro-Harmonix Canyon Echo: an extremely compact digital delay pedal with up…

ehx RERUN Tape Delay User Manual

September 25, 2023
ehx RERUN Tape Delay User Manual Welcome to the Electro-Harmonix Rerun Tape Delay: an extremely compact tape delay modeler with up to 3 seconds of delay time. The Rerun lets…

ehx Pico Platform Compressor User Manual

August 11, 2023
ehx Pico Platform Compressor Product Information The Electro-Harmonix Pico Platform is a compact and simplified version of the Electro-Harmonix Platform. It is a compressor/limiter pedal that provides studio-quality compression in…

Electro-Harmonix manuals from online retailers

Electro-Harmonix 6973 Vacuum Tube Instruction Manual

Ele-9183 • December 25, 2025
Instruction manual for the Electro-Harmonix 6973 vacuum tube, providing details on installation, operation, maintenance, troubleshooting, and specifications for amplifier applications.

Community-shared Electro-Harmonix manuals

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Electro-Harmonix support FAQ

Common questions about manuals, registration, and support for this brand.

  • What power supply do EHX pedals use?

    Most Electro-Harmonix pedals require a 9VDC adapter with center-negative polarity (e.g., EHX 9.6DC-200). Using an incorrect adapter or polarity can damage the device and void the warranty.

  • How do I contact Electro-Harmonix support?

    You can reach EHX support via email at info@ehx.com or sales@ehx.com. Telephone support is available at (718) 937-8300.

  • Does my EHX product have a warranty?

    Yes, EHX products generally come with a warranty covering defects in materials and workmanship. Unauthorized repair attempts or using improper power supplies may void this warranty.

  • Where are Electro-Harmonix products made?

    Electro-Harmonix is based in New York City, United States. Many of their products are designed and assembled in NYC, while others are manufactured globally to their specifications.