Played an Electone Yamaha (sounded like an arranger to me), starting in 1976. Had three different ones. Had an Auto Orchestra
and a small Casio ($200.00-37 miniature keys-white). Lined out of the Casio and into the jack at the bottom of the Yamaha.
Still have the last Electone, Auto Orchestra and the Casio!
Russ (packrat) Lay