1967 to I think 1974 Ace Tone analog drum machine. Ace Tone was pre Roland and made some pretty cool sounding drum machines. This unit has several presets that can be mixed and matched to create some usable patterns. Definitely has that vintage sound reminiscent of that early TG sound or Jarre- Oxygene, Mixed with some effects and cool, I suspect there is ways of aftermarket midi/dun sync-ability.