"Octave redesigned the [Cat's] duophonic keyboard sensing, and relaunched the product as the Cat SRM in late 77 or early 78, and eventually the SRM II." SRM stands for "Series Revision Model."
[from The A-Z of Analogue Synthesizers, by Peter Forrest, published by Susurreal Publishing, Devon, England, copyright 1994 Peter Forrest]
