[2] In the early 1970s, Korg, then known as Keio Giken Kogyo Inc. and recognized for its rhythm machines, started development of a new electric organ, led by engineer Fumio Mieda.

[8] In 1974, Korg introduced the miniKORG 700S, an enhanced version of the original model with a secondary control panel named the 'Effects Section,' alongside an additional oscillator that could be tuned independently.

The 700S also added white and pink noise generators, filter modulation termed 'travel vibrato', and a 'sustain long' option that greatly extended the envelope time.

[10] In 2021, Korg released the miniKORG 700FS, a modern reissue designed in collaboration with Fumio Mieda, the original creator.

Other new features include aftertouch, an arpeggiator, USB port, MIDI IN, a CV/Gate In jack as well as a memory button for saving patches.