
EMS Synthi 100
The EMS Synthi 100 is a large analogue/digital hybrid synthesizer commissioned by Radio Belgrade, designed by David Cockerell and documented in 1971. It developed from a concept of three VCS3 systems but contains analogue modules equivalent to six VCS3s. It features 12 voltage-controlled oscillators and eight voltage-controlled filters. Two monophonic keyboards produce four control voltages and two triggers. Its digital sequencer has three duophonic layers and 256 duophonic note events. Two 60×60 matrices connect modules via patch pins. Keyboard spread adjusts for equal temperament or microtonal tunings up to 61 divisions per semitone.

