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The Buchla 100 series' sixteen-step sequencer (1960s), four panel units wide, drawn in its San Francisco Tape Music Center panel: it "produces a sequence of two to sixteen programmed voltages at each of three outputs. Otherwise identical to Model 123" (the 100 series catalogue), whose switching "is accomplished by applying a pulse, usually from Model 140 pulse generator. Indicator lamps show which of the 24 potentiometers are in control". Three rows of sixteen knobs for the voltages A, B and C, a lamp over each step, sixteen pulse outputs, a NUMBER OF INCREMENTS switch from 2 to 16 and the INPUT for the stepping pulse.

Key features

• Two to sixteen steps
• Three voltages per step (A, B, C)
• A pulse output and a lamp for each step
• Stepped by a pulse at its input