HT-840
| Brand | Lo-D |
| Manufacturer | Hitachi/Lo-D |
| Function | Turntable |
| Produced | 1977–1978 |
| Country | Japan |
| Dimensions | 49 × 18 × 41.3 cm (W × H × D) |
| Weight | 15 kg |
| Notes | Direct drive turntable. All manual. Signal to noise ratio: 77dB. Wow and flutter: 0.02% wrms. Very rare. Just some hundred decks were produced. |