via this auction
"This unit works 100 percent and is in a very good condition. The RSF Kobol was the French synth company's first compact keyboard synthesizer. It is a monophonic analog synthesizer with traditional controls, knobs, switches and two oscillators for a good solid analog synth sound. Unique are the 16 memory slots for saving your sounds and the built in sequencer.
Although it is mostly a traditional analog synth with stable oscillators and lots of knobs that allow you to control the ADS envelope, the filter section and the nice LFO, it did offer some unique features for its time. Most notably, the oscillator waveforms can be continuously swept across for a very cool morph from square to saw to pulse, etc. This, as well as note on/off and other parameters can be controlled via CV/gate. External sounds can be processed through the delicious SSM Kobol filter and envelope sections too."
