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