Electro-Harmonix

Electro-Harmonix (or EHX) is an American company founded by Mike Matthews in 1968 to produce effects pedals for electric guitar and bass. Located in New York City, Electro-Harmonix became an early pioneer in effects pedal design and developed multiple affordable and influential models, including the Big Muff fuzz, Small Stone phaser, Memory Man delay, Electric Mistress flanger, and POG octave generator. Notable users have included Jimi Hendrix, Carlos Santana, Adrian Belew, Steve Howe, Jimmy Page, and Andy Summers. EHX closed in 1984 due to financial struggles, with Matthews founding the New Sensor Corporation to pursue business ventures in Russia under the brand name Sovtek. Sovtek's success selling vacuum tubes for guitar amplifiers and audio systems allowed Matthews to recover the Electro-Harmonix brand, and throughout the 1990s Sovtek manufactured Electro-Harmonix pedals in Russia. Production returned to the United States in 2000, with the brand reissuing many of its classic designs alongside releasing new models.