ppg 300 modular
: 10 voltage control led oscillator (301) _ 5 signal mixer (309) _ 3 clocked sequential control (314)
3 sequential switch (313) _ 1 random voltage generator (white noise, pink noise, sample&hold, slow random - 310)
1 low frequency oscillator (2 LFOs - 305) _ 1 voltage controlled filter (LP, HP, BP - 317)
1 dual analog multiplier (VCA, ringmodulator - 315) _ 1 dual envelope generator (308) _ 1 dual envelope generator (307)
2 voltage controlled modifier (VCF, VCA - 303) _ 2 power supply (311) _ 2 duophonic keyboard (322)

more about ppg 300 modularsynthesizer on K.Tanaka's ppg300 site

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