| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| Unknown Sources E.P. (10", EP, Ltd, Cle) | Toytronic | toy 02 | UK | 1999 | |
| Unknown Sources E.P. (10", RM, EP, RE, Ltd, Cle) | Toytronic | toy 02 | UK | 2002 | |
| Unknown Sources E.P. (File, MP3, EP, VBR) | Toytronic | toy02mp3 | UK | 2005 |
referencing Unknown Sources E.P., 10", EP, Ltd, Cle, toy 02