Proteus Impressions
| Manufacturer | Yamaha, Sound Source Unlimited |
| Function | Accessory |
| Country | USA |
| Form Factor | Part |
| Signal Path | Digital Hardware (including Analog Connections) |
| Notes | SY201 - SY22: Proteus Impressions (128 voices, 32 multis) |
| Manufacturer | Yamaha, Sound Source Unlimited |
| Function | Accessory |
| Country | USA |
| Form Factor | Part |
| Signal Path | Digital Hardware (including Analog Connections) |
| Notes | SY201 - SY22: Proteus Impressions (128 voices, 32 multis) |