 Other manufacturers imitated the Farfisa Cordovox, such as the Bell Accordions Duovox, which used Crumar organ electronics.In 1979, Elka, an Italian organ and accordion company, developed the Elkavox and the Iorio Accorgan, both of which are electronic accordions.These Elka accordions have an external sound module, power supply, and pedal which lies on the ground.