iS40
| Manufacturer | Korg |
| Function | Synthesizer |
| Produced | 1998 |
| Country | Japan |
| Form Factor | Keyboard |
| Signal Path | Digital Hardware (including Analog Connections) |
| Notes | iS40 included new sounds (among them, a new stereo piano sample), new styles (128), and several new features. One of the most appreciated new features, Keyboard Sets, allowed for immediate recalling of keyboard track settings. |