Founded in 1973 by David Oreste DiFrancesco and John Johnson, DOD Electronics was later purchased by Harman, the parent company of DigiTech. DOD effects are popular within the experimental/noise music community, and are prized for their unique sounds. In 2013, the DOD brand was revived with a number of re-releases of classic effects.

The FX68 Super Stereo Chorus features level, speed, delay time and depth controls, and was the successor to the FX67 Stereo Turbo Chorus. The unit was produced from 1990-1996.