91 Class ED75-700 locomotives were built from 1971 to 1976 by Hitachi, Mitsubishi, and Toshiba, for use on the Ou Main Line and Uetsu Main Line, numbered ED75 701 to ED75 791.
, five Class ED75-700 locomotives remained in service, operated by JR East, with three locomotives based at Sendai and two at Akita [REF].