Gamma
| Brand | STR |
| Manufacturer | Sound Technology Research |
| Function | Speaker |
| Produced | 1975 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 37.5 × 60.7 × 31.8 cm (W × H × D) |
| Weight | 43lbs |
| Frequency Response | 37Hz-21.5kHz ±3dB |
| Treble | 3.5" Piezo |
| Midrange | 4" Paper Cone |
| Bass | 10" Paper Cone |
| Sensitivity | 93dB/W/m |
| Impedance (Nominal) | 6Ω |
| Crossover Frequencies | 1.5kHz, 10kHz |
| Recommended Amplifier Power | 10-75W |
| Power Handling | 75W |
| Enclosure Type | Sealed |
| Finish | Walnut |
| MSRP (1975) | $179 |