A monophonic analog synth produced by Steiner-Parker from 1975 to 1979; it was probably the company's most popular product. It featured an architecture basically similar to the Minimoog, but with some additional features and many more signal routing options. It was designed using circuits from the company's Synthasystem modular synthesizer line. Notable features include the rows of small toggle switches that select routing options, and the unusual right-to-left presentation of the signal flow on the panel.