image from a Minicon brochure courtesy of Kevin Lightner

The Minicon was released in 1977 as a simplified Synthacon. It has only one VCO, 17 knobs and just about as many switches. It has a 49-note (C-C) keyboard and thick wooden end plates. Product literature stated that it has the "most stable oscillators" and "one oscillator that sounds like two... without PWM"

Product literature, Steiner-Parker described the Minicon as "the world's most interfaceable synthesizer". It featured sample-and-hold (with glide), a 3-mode filter, a noise generator (variable from white to pink), one oscillator, "legato triggers", a 49-note (C-C) keyboard, pulse width modulation, pitch bend, plus and minus triggers out, and an ACD (Attack Converted to Delay) which "allows delayed envelopes for double attack effects".