APM-300
| Brand | Realistic |
| Manufacturer | Radio Shack |
| Function | Accessory (Power Meter) |
| Produced | 1982-1983 |
| Country | Korea |
| Model ID | 42-2104 |
| Form Factor | Tabletop |
| Dimensions | 22.2 × 3.7 × 15.2 cm (W × H × D) |
| Power | AC 120V 60Hz 6W |
| Channels | 2 Channel |
| Brand | Realistic |
| Manufacturer | Radio Shack |
| Function | Accessory (Power Meter) |
| Produced | 1982-1983 |
| Country | Korea |
| Model ID | 42-2104 |
| Form Factor | Tabletop |
| Dimensions | 22.2 × 3.7 × 15.2 cm (W × H × D) |
| Power | AC 120V 60Hz 6W |
| Channels | 2 Channel |