Korg M1 Serial Number — Recent

Serial numbers also help distinguish between the standard M1 and the "EX" (Expanded) version. Many users later upgraded their standard M1s with the EX memory kit, which doubled the internal PCM waveform data. A serial number check against Korg’s manufacturing logs can confirm whether a unit was born as an EX or upgraded later. The Collector’s Value

Debatable. Higher serial numbers (1991/1992) have better output jacks and more reliable tact switches under the buttons. Lower serial numbers (1988) have a thicker, heavier build quality and more "vintage" character in the keybed action. Neither sounds different. Korg M1 Serial Number

Every Korg M1 owner eventually faces two horrors. Your serial number predicts your risk. Serial numbers also help distinguish between the standard