724A
| Brand | Altec Lansing, Altec |
| Manufacturer | LTV Ling Altec, Inc. |
| Function | Amplifier, Pre, Radio Tuner |
| Produced | 1971 |
| Country | United States |
| Form Factor | Standard Width |
| Signal Path | Analog Hardware |
| Dimensions | 45.1 × 12.7 × 41.9 cm (W × H × D) |
| Frequency Response | 20Hz-20kHz ±0.5dB |
| Sensitivity (Phono 1) | 2.0mV |
| Sensitivity (Phono 2) | 2.0mV, 5.0mV |
| Output Voltage | 5V |
| THD | 0.05% |
| IMD | 0.05% |
| SNR (Phono) | 60dB |
| SNR (Aux) | 90dB |
| Sensitivity (FM, IHF) | 1.8µV |
| Capture Ratio | 1.3dB |
| Stereo Separation (FM, 1kHz) | 40dB |
| THD (FM) | 0.3% |
| Frequency Response (FM) | 20Hz-15kHz ±1dB |
| Image Rejection | 90dB |
| Sensitivity (AM) | 15µV |
| SNR (AM, 1mV) | 48dB |
| MSRP (1971) | $550 |
| Channels | 2 Channel |
| Notes | Accessory: Walnut cabinet (Model 42161) |