Korg M1 Serial Number [portable]

Conclusion The Korg M1 serial number is a practical tool for authentication, repair, valuation, and historical research, though it doesn’t always provide a simple, definitive production-date stamp because Korg has not publicly documented a full decoding scheme. For collectors and technicians, combining serial inspection with internal PCB codes, vendor records, community databases, and Korg or service-center inquiries yields the most reliable picture of an individual M1’s origin and history.

No known "clone" cases exist. However, there are many "M1s" that are actually 01/W or T3 boards stuffed into an M1 case. Check that the serial number on the board matches the case. If the case number is 85000 but the board says 400000, avoid it. Korg M1 Serial Number

On the physical hardware, you can find the serial number in two main places: Conclusion The Korg M1 serial number is a

| Part | Low Serial (M1- / 171xxxx) | High Serial (174xxxx+) | | :--- | :--- | :--- | | | Non-backlit (16 pin) | Green backlit (14 pin) | | Key Weight | 55g lead weights (heavy) | 45g zinc weights (light) | | Power Supply | Discrete transformer | Switching supply (different fuse) | | Output Jacks | Soldered directly to board | Wired with a ribbon cable (more durable) | However, there are many "M1s" that are actually