Stereo 120 (Rev. 3)
| Brand | Dynaco |
| Manufacturer | Dynaco, Inc. |
| Function | Amplifier, Power (Kit) |
| Produced | 1974 |
| Country | United States |
| Model ID | ST-120 |
| Signal Path | Analog Hardware |
| Dimensions | 33 × 10.2 × 26.7 cm (W × H × D) |
| Weight | 20lbs |
| Power | 100-120/220-240VAC, 50/60Hz 35W 400W (Max) |
| Frequency Response | 5Hz-100kHz ±0.5dB (1W) |
| Output Power (25Hz-15kHz, 8Ω) | 60W |
| Power Bandwidth (30W, IHF, 0.5% THD, 8Ω) | 5Hz-50kHz -3dB |
| THD (60W) | 0.5% |
| THD (1W) | 0.1% |
| IMD (60W) | 0.5% |
| IMD (1W) | 0.1% |
| SNR | 95dB |
| SNR (IHF) | 100dB |
| Damping Factor | 40 |
| Channel Separation | 70dB |
| Input Impedance | 100kΩ |
| MSRP (1975) | $189.95 |
| Channels | 2 Channel |
| Notes | Minor changes including revised speaker connection terminals. |