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There are two improvisations on each system, the first two on a vintage 100 and the second two on a cloned 200\xa0\nThere are some significant differences in sound between the two eras, most noticeably the tone of the VCOs and the filters. I would describe the earlier VCOs as being richer, fuller and brighter than the 200 series but not as stable, and the filters being more edgy and pure in nature. The 200 system introduced the LPGs, timbre-shaping and the Spectral Processor, all of which give the system a very distinctive sound that was absent from the 100\nPersonally, I like the overall tone of the 100 series very much, as it has a power and richness that puts it in the same league as other early systems such as the Moog Modular and the ARP 2500. I am not sure if there is a similar power in the original 200 series modules (as opposed to modern cloned ones) as I have never been able to compare them directly, but my guess would be that various filters, VCOs and other things that Don began to introduce in the 1970s took the sound away from the more basic and simple sound of the 100, exploring and pioneering other avenues as he went towards fully digital systems in the 1980s. It is a fascinating progression, and one that is mirrored in the development of synthesisers in general between the 1960s and 1980s, as digital technology gradually took over\nThe systems used were as follows:\nBuchla 100\xa0\nVintage Modules:\n102 Dual Stereo Locator\n106 Six Channel Mixer\n110 Dual Gate\n111 Dual Ring Modulator\n112 Touch Control\n123 Sequencer\n130 Dual Envelope Detector\n140 Timing Pulse Generator\n144 Dual Square Wave Generator\n156 CV Processor x 3\n158 Dual Sine/Saw x 2\n160 White Noise Generator\n165 Random Voltage Source\n175 Dual Line Driver / EQ\n180 Dual Attack Generator x 2\n185 Frequency Shifter\n190 Dual Reverberator\n191 Sharp Cutoff Filter\n194 Bandpass Filter\nCloned Modules:\n110 Dual Gate\n144 Dual Square Wave Generator x 3\n146 Sequencer\n180 Dual Attack Generator\n205 Dual Matrix Mixer\nBuchla 200\nCloned Modules:\n205 Dual Matrix Mixer\n208 Stored Program Sound Source\n212 Dodeca Module\n218\xa0Touch Control\n224 Patchbay\n248 MARF + Expander\n256 Dual CV Adder\n257 Dual CV Processor\n258 Dual Oscillator x 2\n259 Complex Waveform Generator\n261e\xa0Complex Waveform Generator\n266 Source of Uncertainty\n275 Dual EQ / Reverb\n277 Signal Delay\n281 Quad Function Generator x 2\n285 Frequency Shifter\n292 Quad LPG\n296 Spectral Processor\nmyblogitsfullofstars.blogspot.com\n\xa0\nzackdagoba.bandcamp.com\n\xa0\ninstagram.com/memetunestudio