A-247B
| Brand | Altec, Altec Lansing |
| Manufacturer | Altec Lansing Corporation |
| Function | Amplifier, Power |
| Produced | 1951 |
| Country | United States |
| Form Factor | 19" Rackmount |
| Signal Path | Analog Hardware |
| Dimensions | 48.3 × 25.7 × 21.6 cm (W × H × D) |
| Weight | 56lbs |
| Power | 105-125VAC, 50/60Hz |
| Frequency Response | 20Hz-20kHz ±1dB |
| Power Output | 65W (Requires 15W drive) |
| Gain | 9.4dB |
| Topology | Class AB2 |
| THD | 2% |
| IMD | 8% |
| Noise Level (0.006W) | -35dB |
| Noise Level (0.001W) | -27dBm |
| Input Impedance | 16Ω |
| Load Impedance | 4/8/16Ω |
| Finish | Blue Gray |
| Output Tube | 807 |
| Tube Complement | 807 (x2), VR15/OD3 (x2), 5R4GY |
| MSRP (1951) | $276 |
| Channels | 1 Channel |