RT-300
| Brand | Monarch |
| Manufacturer | Monarch Electronics International, Inc. |
| Function | Tape Machine |
| Produced | 1964 |
| Country | United States |
| Form Factor | Portable |
| Signal Path | Analog Hardware |
| Weight | 24lbs (Shipped) |
| Power | 30W |
| Frequency Response | 7½ips: 50Hz-12kHz, 3¾ips: 50Hz-8kHz |
| Speeds | 7½ips, 3¾ips |
| Reel Size | 3", 5", 7" |
| Wow and Flutter (7½ips) | ±0.2% |
| Wow and Flutter (3¾ips) | ±0.4% |
| Finish | Cordovan and Gray Vinyl |
| Distributor's Price (1964) | $50.50 |