the blackbox (with poly synth sound, but not much more) and the polykobol

French Synthesizers since 1970 by
Ruben & Serge Fernandez
find more infos and pics here

KEYS:
-polykobol: rare 1979 - 8voice, only 30 have been made, 32 mems , hardware: 3x6809, sequencer (8tracks), 2x8voices=16 VCOs, noise, tape recorder for storage on board (!!), LFO, 2 VCOs, LPF 24dB/okt., vca, velocity resp. KB 5oct.,aftertouch,arp'er, polymod section.
-kobol: 200 have been made in 1978, 2 VCOs:triangle, square, saw, pulse:variable sweep, sync, LFO(triangle, square), Glide, VCF LPF 24dB/Oct. with 2 ADS envs, VCA ADS env

RACKS:
the most known RSF KOBOL from 1979 (1000 made) 2 VCOs, sync,Filter 24dB/Oct., noise ,1 voltage processor, LFO, interesting sound: some sort of "hard feeping ARP".
the successor (200 made) kobol 2 had:Voltage Processor,LFO,Gate Delay, Ring Modulator, Mixer, ADSR env, S/H,Noise (white only), Env Follower, VCA, so its a ring mod while the noise was reduced to just white noise.