The serial number label will also tell you where the unit was manufactured.
Korg did not explicitly print the date on the sticker, but the industry has reverse-engineered the system based on thousands of user-submitted units.
The Korg M1 serial number is a tiny sticker that holds immense power. Whether you are a collector trying to verify a 1988 vintage unit, a buyer trying to avoid a rebuilt franken-synth, or a seller justifying a high price, that sequence of digits is your truth.
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.
Have a Korg M1 serial number mystery? Leave the first four digits in the comments below (on the original blog post) and our community will help you date it.
Korg used a relatively straightforward numeric system for the M1. There are no letters in a standard M1 serial number (unlike the later M1R rackmount, which sometimes starts with a letter).
Standard Format: A 5, 6, or 7-digit number.
As production ramped up, Korg moved the serial number to the bottom chassis. Flip the 22-pound beast over. Look near the rubber feet on the right-hand side (under the keybed). You will find a barcode sticker. The serial is printed directly below the barcode.
Always ask the seller for a photo of the serial number and compare it to known stolen gear databases (e.g., Stolen Guitar Registry, SynthFinder). Also check:
The Korg M1 is a dinosaur in the best sense of the word—it survived the 90s, the digital revolution, and the analog revival. The Korg M1 Serial Number is your synth's birth certificate and medical history rolled into one. Korg M1 Serial Number
Before you sell your M1, or before you buy a "bargain" listing on Reverb, ask for the serial number. It takes ten seconds to read, but it will save you a decade of headaches.
Do you own a Korg M1? Leave a comment with your serial prefix below (e.g., "M1-08xxx") and share your restoration story.
The Korg M1 serial number is a vital identifier for owners of the "all-time best-selling synth". Produced between 1988 and 1995, approximately 250,000 units were manufactured, making these serial numbers essential for determining production age, verifying authenticity, and managing maintenance like battery replacements. Where to Find the Korg M1 Serial Number
Locating the serial number on an original hardware unit is straightforward, though it can sometimes be obscured by decades of use:
Rear Panel Sticker: The primary location is a black sticker on the back of the unit, typically near the audio outputs or MIDI ports. This label lists both the model name ("M1") and the unique serial number.
Bottom of the Chassis: Some units may have a secondary sticker on the underside, often near a barcode.
Original Packaging: If you still have the original box or warranty card, the serial number was originally printed there for registration purposes. Decoding the Serial Number
Unlike earlier Korg models that used a YYNNNN format (year followed by sequence), units from the M1 era (starting around 1983) typically followed a six-digit "Just Numbers" sequence. Serial Number Location - Korg Forums
The , manufactured from 1988 to 1995, is the best-selling digital synthesizer in history, with approximately 250,000 units produced. Because of this massive production run, serial numbers are the primary way for collectors and technicians to identify a unit's age and internal hardware revisions. 1. Finding the Serial Number The serial number label will also tell you
On the physical hardware, you can find the serial number in two main places:
Rear Panel Sticker: A small white or silver sticker typically located on the back of the unit, often near the MIDI ports or power input.
Original Documentation: For software-related versions (like the M1 Le), the serial number or product code is found on a black piece of paper or a KORG Software Bundle PIN card included in the original manual bag. 2. Serial Number Format & Dating
Korg transitioned its numbering system in 1983. For the M1 era (1988–1995), the serial numbers are strictly numerical (usually 6 digits) and do not contain embedded date codes like "YYMM". Instead, dating is determined by comparing your number to known production milestones:
The "First 100,000": Korg confirmed that 100,000 units were produced in the first two years. Serial #100,000 rolled off the line in November 1990.
Late Models: Higher serial numbers (e.g., in the 200,000+ range) indicate units manufactured between 1992 and 1995.
Early Models: Numbers below 050,000 are likely from the first year of production (1988–1989). 3. Why the Serial Number Matters
Verification: Buyers should verify serial numbers against production databases to avoid "M1-compatible" clones or mislabeled models.
Hardware Revisions: Different serial ranges may have different internal components, such as variations in the power supply or the internal CMOS battery (often a CR2032). Have a Korg M1 serial number mystery
Software Registration: For digital versions, the serial number is required to associate an owner with a unique user account on KORG USER NET. Summary Table: Estimated Production Timeline Serial Number Range Estimated Production Year 000001 – 050000 1988 – 1989 050001 – 100000 1989 – Nov 1990 100001 – 175000 1991 – 1993 175001 – 250000 1993 – 1995 Korg M1 - what model? - Vintage Synth Explorer Forums
, released in 1988, is one of the best-selling synthesizers of all time, with an estimated 250,000+ units sold [22, 27]. Because of this massive production run, serial numbers range significantly, but they follow a few identifiable patterns:
Location: You can find the serial number on a black sticker located on the back panel near the connectors or on the bottom of the unit [8].
Production Milestone: Serial number 100,000 was famously manufactured in November 1990 [22].
Common Ranges: Serial numbers typically appear as simple numeric strings. Recorded examples from user databases include numbers in the 100,000 range (e.g., 103917) and later production units reaching into the 215,000+ range [1, 5]. Famous "Pieces" of the M1 Sound
If you are looking for a "piece" of its history, the M1 is most famous for specific presets that defined late 80s and early 90s music: M1 Piano (Preset 01: Piano 16') : The definitive house music piano used in Madonna's "Vogue " and Black Box's "Ride on Time" [14, 23].
M1 Organ (Preset 17: Organ 2): The "clicky" house organ sound central to Crystal Waters' "Gypsy Woman (She's Homeless)" and Robin S.'s "Show Me Love." Universe (Preset 00)
: A lush, atmospheric pad that showcased the unit's "AI" (Advanced Integrated) Synthesis System [6, 24].
For owners looking to restore their hardware, you can download the official factory preload data or refer to the M1 Owner's Manual from the Korg Support Library [12, 15, 28].