Jen SX1000

via this auction

Good shot with and without the patch overlay.

"This is a cracking little Italian-made synth from 1978 (so I believe). DIY-mods abound for this machine, including external controller options, MIDI input and chip upgrades.

A few SX1000 user reviews available here: Sonic State

Specifications:
Polyphony - Monophonic Oscillators - One DCO (sawtooth, square, pulse-width modulation); 4-octave range (32', 16', 8', 4'); white and pink noise generators LFO - 1 LFO; Vibrato Filter - 1 Low-pass filter, 12dB/octave, with ADSR VCA - 1 ADSR Keyboard - 37 keys Memory - None Control - None (Kenton Midi Retrofits available) Date Produced - 1978 - 1982"