AD-41
| Brand | Heathkit |
| Manufacturer | Heath Company, Daystrom, Incorporated |
| Function | Tape Machine (Kit) |
| Produced | 1961 |
| Country | United States |
| Signal Path | Analog Hardware |
| Dimensions | 39.4 × 34.3 × 27.3 cm (W × H × D) |
| Weight | 32lbs (Shipped) |
| Power | 105-125VAC, 60Hz 110W |
| Frequency Response | 50Hz-15kHz ±2dB (3W), 7.5IPS: 50Hz-12kHz ±2dB, 3.75IPS: 50Hz-10kHz ±2dB |
| Speeds (IPS) | 3.75/7.5 |
| Input Sensitivity (Mic) | 3mV |
| Input Sensitivity (Aux) | 0.2V |
| THD | 2% |
| IMD (60Hz:6kHz, 4:1) | 3% |
| SNR | 45dB |
| Bias Frequency | 75kHz |
| Equalization | NARTB |
| Output Tube | EL84 |
| Output Power | 3W |
| Tube Complement | 12AU7, EM84 (x2), EL84 (x2), EZ81, 6EU7 (x4) |
| MSRP (1961) | $159.95 |
| Channels | 2 Channel, 4 Track |