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 Phasor 595 is a phase shifter pedal featuring regeneration, tone and speed controls. The unit produces a very thick, full sound and can be used at full speed to produce a Leslie-esque effect.