A-420
| Manufacturer | Yamaha |
| Function | Amplifier, Integrated (Natural Sound Stereo Amplifier) |
| Produced | 1985-1986 |
| Country | Japan |
| Form Factor | Tabletop |
| Signal Path | Analog Hardware |
| Dimensions | 43.5 × 11.2 × 32.7 cm (W × H × D) |
| Weight | 6,2 |
| Manufacturer | Yamaha |
| Function | Amplifier, Integrated (Natural Sound Stereo Amplifier) |
| Produced | 1985-1986 |
| Country | Japan |
| Form Factor | Tabletop |
| Signal Path | Analog Hardware |
| Dimensions | 43.5 × 11.2 × 32.7 cm (W × H × D) |
| Weight | 6,2 |