| Model | SA-R477 |
| Year | 89 |
| Watts rms | 100 |
| Harmonic distortion | 0.008 |
| IM distortion | 0.008 |
| Power bandwidth | 20-20 |
| Phono s/n ratio | 70 |
| Mono sensitivity | 11.2 |
| Capture ratio | 1.0 |
| Mono signal strength | 20.2 |
| Stereo signal strength | 40.2 |
| FM distortion | 0.2/0.3 |
| IF wide/narrow | 65 |
| FM s/n ratio | 70 |
| Weight | 18 |
| Price | 530.00 |