MK I
| Brand | Mellotron |
| Function | Synthesizer (Tape-Based) |
| Produced | 1963-1964 |
| Country | Stockholm |
| Form Factor | Tabletop |
| Signal Path | Analog Hardware |
| Weight | 140kg (310lb) |
| Links | Manufacturer Page · Sound on Sound Review |
| Notes | The first of the 3/8-inch three-track Mellotrons. Notable for the toughened Meccano (toy) chains that connected the motors and axles. Contained reverb unit along with a transistor pre-amp and 2 speakers. About 55 were made from 1963 to 1964. |