Gemini is a worldwide manufacturer of professional audio and mobile DJ equipment, including DJ CD players, DJ turntables, DJ mixers, professional amplifiers, loudspeakers, wireless microphones & DJ audio effects. Founded in 1974, it now has bases in the USA, Spain, UK, and Germany.
In June 2006, it announced the corporate name would change to GCI Technologies, an acronym meaning Gemini, Cortex, and iKey, its three divisions. Cortex, a maker of hard drive music systems, made its debut at the 2006 NAMM convention and was subsequently acquired by Gemini. The Gemini DJ brand name will still be used as it currently is.