Korg transitioned its numbering system in 1983. For the M1 era (1988–1995), the serial numbers are (usually 6 digits) and do not contain embedded date codes like "YYMM". Instead, dating is determined by comparing your number to known production milestones:
There is a persistent myth that an M1 with a serial number below 810000 is a "prototype." This is false. The first 10,000 units are functionally identical to the next 10,000. However, market psychology is real. On Reverb and eBay, an M1 with serial 802345 will sell for roughly $150 more than an identical 199999 unit simply because buyers chase the "first batch" aura.
Here's a rough breakdown of the production date and batch number:
In 1991, Korg released the M1EX, which included the PCM expansion card pre-installed. These serial numbers are distinct.
Korg confirmed that 100,000 units were produced in the first two years. Serial #100,000 rolled off the line in November 1990 . Korg M1 Serial Number
For collectors, repair techs, and vintage gear enthusiasts, the M1’s serial number is far more than a sticker. It’s a birth certificate, a production timeline, and a first line of defense against counterfeit or frankensteined instruments.
The Korg M1 is the best-selling digital synthesizer in music history. Released in 1988, this legendary workstation defined the sound of late '80s and early '90s pop, house, and film music. Because Korg manufactured roughly 250,000 units during its production run, finding an M1 on the used market is easy. However, finding out exactly when your specific unit was built, or verifying if its internal hardware is original, requires decoding the Korg M1 serial number.
: Collectors often look for early-run units or those in pristine condition with clear identifiers.
The welcome screen will display a version number (e.g., #19 indicates firmware version 1.19). Korg transitioned its numbering system in 1983
The serial number is typically found on a black sticker located on the rear panel of the synthesizer, near the audio and MIDI connectors.
Q: Can I use my Korg M1 serial number to determine its value? A: While the serial number itself doesn't directly affect the instrument's value, it can help collectors and enthusiasts verify the instrument's authenticity and age, which can impact its value.
: If it’s not on the back, check the underside of the unit. There are often stickers with barcodes here; the serial number is usually the one located below the upper barcode. Decoding the Serial Number
Before you buy any used Korg M1, always ask the seller for a clear photo of the rear serial number. If they refuse, walk away. If they provide it, cross-reference it with the table above. And if you find an 80,000 series unit with a clean keybed and a working battery? Buy it immediately. You aren’t just buying a synth; you are buying a piece of music history. The first 10,000 units are functionally identical to
You will often see listings for the "Korg M1 EX." This is not a different serial number range.
The Korg M1 serial number contains valuable information about your instrument, including its production date, factory, and model year. Here's a breakdown of the serial number format:
To find technical details about your specific hardware, you can use a hidden button combination: Production/Firmware Date: [ENTER] + [9]