679A
| Brand | Altec Lansing, Altec |
| Manufacturer | LTV Ling Altec, Inc. |
| Function | Microphone |
| Produced | 1966 |
| Country | United States |
| Form Factor | Handheld / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 3.3 × 3.3 × 18 cm (W × H × D) |
| Weight | 0.3lbs |
| Frequency Response | 50Hz-14kHz |
| Element Type | Moving Coil Dynamic |
| Diaphragm | Polyester |
| Directivity Pattern | Cardioid |
| Discrimination (Front-to-Back) | 15dB |
| Output Impedance | 20kΩ |
| Output Level | -58dBm/10dynes/cm² |
| Hum (Ref. 10⁻³ Gauss) | -120dB |
| Finish | Black and Chrome |
| Notes | High output impedance variant of 678A |