via MATRIXSYNTH CLASSIFIEDS
"The Oberheim 4 voice is a very impressive analog synth that was developed based on the Oberheim SEM stand alone synthmodules. Oberheim made the 4 Voice from around 1975 to 1979.

4 independent LFO’s + one master LFO for pitch, 8 Oscillators, 4 multimode Filters, …. everything you need.
The Fourvoice we have for sale is in great condition and plays great. It has some normal age related wear, a few little scratches in the tolex, nothing dramatic. We won’t retolex this synth cause the tolex is still in nice shape and a little bit of patina suits the unit well. All pots and switches work as they should and the unit is exactly calibrated to factory specs. The unit stays in tune and the keyboard is not worn out.
It’s a pleasure to play this synth and probably a great investment that will keep it’s value.
The unit works under 110V but we can upgrade it to 220V if this is preferred by the new owner.
The unit has mini-jack CV / Gate inputs on the front panel, just above each SEM voice."