1556A Altalk
| Brand | Altec Lansing, Altec |
| Manufacturer | LTV Ling Altec, Inc. |
| Function | Amplifier, Integrated |
| Produced | 1965 |
| Country | United States |
| Form Factor | 19" Rackmount |
| Signal Path | Analog Hardware |
| Dimensions | 48.3 × 13.3 × 16.5 cm (W × H × D) |
| Weight | 13lbs |
| Power | 117VAC, 50/60Hz 65W |
| Frequency Response | 20Hz-10kHz ±1dB, 50Hz-15kHz -3dB (Mic) |
| Output Power (2% THD) | 10W |
| Output Power (EIA RS234) | 14W |
| Input Sensitivity (Phono) | 600mV |
| Input Sensitivity (Aux) | 600mV |
| Input Sensitivity (Mic) | 8.2mV |
| Input Sensitivity (Call-In, 1kHz) | 1.1mV |
| Load Impedance | 50Ω |
| Tube Complement | 12AX7 (x2), 6DZ7, 6AX5 |
| Finish | Dark Green |