Apparently little is known about the actual company "Jen Elettronica" though they were another Italian company it appears. In 1977 they released the SX1000 which may be one of the great bang/buck synths of all time really. At the time they could not compete with the well established companies but their products are getting some recognition as in this SOS article now.
Products:
SX1000 SX2000 Synx508