Electro-Harmonix is a New York-based company that makes high-end electronic audio processors and sells rebranded vacuum tubes. The company was founded by Mike Matthews in 1968. It is best known for a series of popular guitar effects pedals introduced in the 1970s and 1990s. During the mid-70s, Electro Harmonix had established itself as a pioneer and leading manufacturer of guitar effects pedals. These electronic devices were cutting edge technology and innovations. Electro-Harmonix was the first company to introduce, manufacture, and market affordable state-of-the art "stomp-boxes" for guitarist and bassists, such as the first stomp-box flanger (Electric Mistress); The first analog echo/delay with no moving parts (Memory Man); The first guitar synthesizer in pedal form (Micro Synthesizer); The first tube-amp distortion simulator (Hot Tubes).