From Keen On Keys. The Casio CT-410V is the larger version of the MT-400V. It has the same sound and features and was also released in 1984. Support this channel and buy an album on Bandcamp: https://keenonkeys.bandcamp.com Listen to some tracks on Soundcloud: Infos about modifications: http://weltenschule.de/TableHooters/Casio_CT-410V.html