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ARP Sequencer from inside back cover of Contemporary Keyboard December 1976.
"The Polymoog utilizes 72 micro-ships that enable the performer to play 72 synthesized notes simultaneously. Each chip holds two VCAs, one VCF, and one contour generator, thus providing each key with its own volume, attack, and brightness response. Two oscillators provide the basic patches. Programming is done in two ways: 1) With eight preset modes - piano, strings, harpsichord, organ, vibes, funk, brass, and clav.; 2) From scratch, as in the standard monophonic synthesizers. Control voltages are supplied by an LFO that produces sawtooth and pulse waves, and the keyboard may be split for getting separate effects in the bass and treble registers."That pretty much sums it up!