AA-1640
| Brand | Heathkit |
| Manufacturer | Heath Company, Schlumberger Limited |
| Function | Amplifier, Power (Kit) |
| Produced | 1975 |
| Country | United States |
| Form Factor | Standard Width |
| Signal Path | Analog Hardware |
| Dimensions | 48.3 × 18.4 × 45.7 cm (W × H × D) |
| Weight | 72lbs (Shipped) |
| Power | 120VAC, 60Hz |
| Frequency Response | 7Hz-50kHz +0/-1dB, 5Hz-100kHz +0/-3dB |
| Output Power (8Ω) | 200W |
| THD | 0.1% |
| IMD | 0.1% |
| Damping Factor | 50 |
| SNR | 100dB (<400µV) |
| Channel Separation | 50dB |
| Input Sensitivity | 1.5V |
| Input Impedance | 50kΩ |
| MSRP (1976) | $439.95 |
| Channels | 2 Channel |
| Links | With Meters: AAS-1640 |
| Notes | Convertable to AAS-1640 with optional AAA-1640-1 output meter kit ($69.95). |