In the mid seventies Farfisa produced the " Stereo Synthorchestra". It has a three octave keyboard, and a "Mono", and "Poli"tone generator section. The "poli" section has four timbres, "Trombone", "Trumpet", "Piano", and "Viola". The Mono section is the "syth" part of the machine. It has nine timbres, Tuba, Trombone, Trumpet, Bari Sax, Alto Sax, Bass Flute, Flute, Piccolo, and Violin. This section is monophonic, with a highest note priority. The mono section can be modified by two envelope controls, and a "Wha-Wha", there is also a variable portamento. Only one timbre, from each section, can be used at a time. each section has a "Brilliance" control, which adds more top end to the sound, and a variable speed Vibrato, which has a delay function, for delayed vibrato effects.

The Synthorchestra also has seperate outputs for each of it's two sections, giving it the name "StereoSynthorchestra"