Korg's one and only fully modular synthesizer emerged in 1978 as the MS-50, a rare expander module designed to supercharge setups like the MS-10 or MS-20 with patchable wizardry no other in their lineup could match.
This desktop beast measures 570mm wide by 167mm deep and 248mm tall at 6.2kg, packed with a single analog VCO offering triangle, sawtooth, and pulse waves across four octave ranges plus PWM, pink and white noise sources, a resonant 2-pole lowpass filter (manually and CV controllable), a manual highpass low-cut filter, two ADSR envelopes, and an LFO with triangle, saw up/down, and pulse shapes featuring symmetry control. Extras like ring modulator, sample & hold, integrator, inverter, frequency divider, three-channel summing amp, volt meter, and junctions make it fully patchable with no fixed signal paths—everything connects via patch points supporting both Hz/V and V/Oct CV/gate, S-trigger, plus external signal processing for overdrive and envelope derivation. Power it with its wired AC at 20W, and you're set for esoteric sound design from cybernetic noise to Odyssey-style basses.
Owners cherish its superior oscillator stability and "broken-sounding" dirty filter over smaller MS siblings, hailing it as a top analog FX processor and bass machine when paired right—though that warbly VCO drift is a classic vintage quirk some love, others tweak.
