SA-3
| Brand | Heathkit |
| Manufacturer | Heath Company, Daystrom, Incorporated |
| Function | Amplifier, Integrated (Kit) |
| Produced | 1959 |
| Country | United States |
| Signal Path | Analog Hardware |
| Dimensions | 31.8 × 8.3 × 17.1 cm (W × H × D) |
| Weight | 13lbs (Shipped) |
| Frequency Response | 50Hz-20kHz ±1dB |
| Output Power | 3W |
| Output Power (Mono) | 6W |
| Impedance Load | 4/8/16Ω |
| THD (3W, 60Hz-20kHz) | 3% |
| IMD (3W, 60Hz:6kHz) | 2% |
| SNR (3W) | 65dB |
| Output Tube | EL84 (6BQ5) |
| Finish | Black and Gold |
| MSRP (1959) | $29.95 |
| Channels | 2 Channel (May be operated mono for double the power output.) |
| Connections |
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| Links | Successor: AA-201 |