MK-4 Half-Track Stereo Conversion Kit
| Brand | Heathkit |
| Manufacturer | Heath Company, Daystrom, Incorporated |
| Function | Tape Machine (Kit) |
| Produced | 1958 |
| Country | United States |
| Signal Path | Analog Hardware |
| Dimensions | 39.4 × 34.3 × 20.3 cm (W × H × D) |
| Weight | 11lbs (Shipped) |
| MSRP (1959) | $62.95 |
| Channels | 2 Channel |
| Displays |
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| Notes | Conversion kit for monaural TR-1A MK-3 to TR-1AH (TR-1A MK-4) half-track stereo unit. Includes new stereo head array and second TE-1. |