Korg M1 Serial Number Fix Jun 2026

| Serial Start | Year of Manufacture | Collector Value | Common Issues | | :--- | :--- | :--- | :--- | | 80,000 – 89,999 | Very early 1988 | High | Shaky output jacks; heavy key return spring | | 90,000 – 99,999 | Late 1988 | Medium-High | Still has old battery type | | 100,000 – 199,999 | 1989 | Medium | Most common; reliable | | 200,000 – 399,999 | 1990 | Medium | Improved LCD contrast | | 400,000 – 500,000 | 1991-1992 | Low (common) | Usually have the "M1 EX" board internally |

The Korg M1, released in 1988, is more than just a synthesizer; it is the definitive "Workstation" that shaped the sound of late 80s and early 90s pop, house, and film music. For collectors and enthusiasts, the serial number Korg M1 Serial Number

: The "clicky" house organ sound central to Crystal Waters' "Gypsy Woman (She's Homeless)" and Robin S.'s "Show Me Love." Universe (Preset 00) | Serial Start | Year of Manufacture |