73A
| Brand | Altec, Altec Lansing |
| Manufacturer | Altec Lansing Corporation, LTV Ling Altec, Inc., Ling-Temco-Vought, Inc |
| Function | EQ |
| Produced | 1965 |
| Country | United States |
| Signal Path | Analog Hardware |
| Input Impedance | 600Ω |
| Output Impedance | 600Ω |
| Insertion Loss | 16dB |
| Operating Level | -70dBm to +24dBm |
| Bands | 6 |
| Finish | Black and Nickle |