The Korg MS-50 is the fully patchable top model of the MS series
Introduced as an expansion module for the MS-10/20, the MS-50 is a rare model within the MS series. Based on MS-20, it had no keyboard, but added internal circuits such as a divider and integrator not found on the MS-10/20, which supported even more complex ways of creating sound. The voltmeter on the upper right-hand side of the panel captured the hearts of many synth players. Of course, it could also be played on its own by using CV/Gate signals.
While the MS-10/20 provided a basic signal route that was internally connected, and therefore could be played without any patching, the MS-50 used a fully patch-reliant design. By using the MS-50 in conjunction with an MS-10/20 or the SQ-10 described below, it was possible to construct a larger-scale modular system.