| The Difference Machine | |
| Type: | studio |
| Artist: | Big Big Train |
| Cover: | Big_Big_Train_The_Difference_Machine.jpg |
| Released: | 30 August 2007 |
| Genre: | Progressive rock, new prog |
| Length: | 58:36 |
| Label: | English Electric |
| Prev Title: | Gathering Speed |
| Prev Year: | 2004 |
| Next Title: | The Underfall Yard |
| Next Year: | 2009 |
The Difference Machine is the fifth studio album by the English progressive rock band Big Big Train. It was released on 30 August 2007, by English Electric Recordings. TDM is a concept album exploring chaos theory, communication, failure, death, loss, and bereavement. The story is of the death of an individual, which was linked to an exploding star in a distant galaxy. There are more influences of Van der Graaf Generator, Genesis, Mew, Sigur Rós and King Crimson throughout the album.