This is a great musical toy. It’s the Oberheim Cyclone.  I actually bought it from Davy Spillane. Mine was broken for years- at a gig I hooked up the wrong power supply :(. It can do multiple arpeggios under full keyboard control, allowing you to play things as if you had 30 fingers. It’s a great tool for improvising, and developing ideas. There’s at least one piece on the forthcoming album that started out with the help of this box. Thanks to Alexander Guelfenburg at Virtual Music for his help in bringing this back to life. I now have an optional Oberheim Strummer too.