SK50D
| Manufacturer | Yamaha |
| Function | Synthesizer |
| Produced | 1980 |
| Country | Japan |
| Form Factor | Keyboard |
| Signal Path | Analog Hardware |
| Dimensions | 1128 mm x 642 mm x 237 mm |
| Power | 60 watts |
| Notes | The Yamaha SK50D contains a monosynth, polysynth, strings, and organ. It fills a space similar to that of the Arp Quadra. With dual keyboards and weight over 100 pounds, it's one of the heaviest synthesizers ever produced. |