When Roland introduced the RS-202 in 1976, they weren't trying to reinvent the string machine—they were perfecting it. This was the keyboard that would define the sound of disco and countless orchestral arrangements throughout the late seventies, and it did so by being deceptively simple in concept but remarkably effective in execution.
The RS-202 is a fully polyphonic 61-key string synthesizer built around sawtooth wave oscillators and frequency dividers that give it the warm, organic character of a vintage string ensemble. The keyboard splits permanently into two independent sections—the bottom two octaves and top three octaves—each capable of playing different sounds simultaneously with separate volume controls. You get three core presets: Strings I delivers thick, woody cello and bass tones, Strings II sits higher up with thinner violin and viola character, and a Brass section rounds out the palette. The real magic happens in the effects section. The Ensemble effect comes in two flavors—position I creates a lively, modulated shimmer while position II produces a lush, rich chorus—and the Vibrato section includes a pre-delay slider that lets you dial in more natural-sounding swell articulation. Attack can be switched between soft and hard, and release time is continuously variable. A single tone control shapes the character of the strings.
The RS-202 earned its reputation quickly among serious musicians. Genesis keyboardist Tony Banks, Peter Bardens of Camel, and composer Tomita all made it a centerpiece of their rigs. The Ensemble effect in particular became so beloved that Roland would carry it forward into the Juno and Jupiter lines, where it became a defining characteristic of those legendary synthesizers. What strikes people about the RS-202 today is how it manages to sound both warm and slightly gritty—there's character in those analog circuits that feels alive in a way digital string machines never quite capture.
