| # | SP/EP Title | Release Date | Label | UK | USA |
| 1. | Meltdown | 9/1989 | | 78 | |
| 2. | We're Comin' At Ya
feat Stepz | 3/1990 | | 65 | |
| 3. | Let's Get Busy
& Clubland | 6/1990 | Geffen | 86 | |
| 4. | It's Too Late
feat Dina Carroll | 1/1991 | | 2 | |
| 5. | Naked Love
featuring Dinah Carroll | 5/1991 | | 39 | |
| 6. | Love Eviction | 9/1995 | | 32 | |
| 7. | Fanny Hill / Earmubyumyum | 13.03.2000 | Hazchem | | |
| 8. | Quartz EP
(Synergie ("Mad" mix) / Event Float) | 19.03.2001 | Ascend | | |
| 9. | Plastic Heat EP
(The Heat / Plastic) | 11.02.2002 | Ascend | | |
| 10. | Escape From PG EP
(Escape From PG / Scene 1 / Come Back) | 21.07.2003 | Ascend | | |
| 11. | Biscornuto Remixes EP | 17.11.2003 | Ascend | | |
| 12. | My Definition Of Techno EP
(Part 1) (Techno In E Minor / Scene 2 / Lights Out) | 06.12.2004 | Ascend | | |
| 13. | Alphabet Q EP
(Q Force / Alphabet Q / Overture) | 07.02.2005 | Zync | | |
| 14. | My Definition Of Techno Vol 2
(Q Essence / Troy / Scene 3) | 16.05.2005 | Re-Active Music | | |
| 15. | Techno In E Minor (Preach remix, Southsonik remix, Human Tech remix) | 16.05.2005 | Ascend | | |
| 16. | Human Tech EP
(XS Of Rhythm / Overboasting / Input 3 / Model A)
meets Human Tech | 21.11.2005 | Re-Active Music | | |
| 17. | Tzumbae / Orange | 11.12.2006 | Wildchild | | |
| 18. | D's Wot I Think / 250 Euros / Beeing Tech
vs Human Tech | 12.05.2008 | Syndikaat | | |
| 19. | Taking Over Me / Your Love
& Marcus Intalex & St Files | 04.08.2008 | Hospital Classic Symptoms | | |
| 20. | Rolling Man / October's Rain | 15.09.2008 | Shadowfax | | |
| 21. | Disco Spaceship Volume 5
(Beyond The Clouds / Odyssey / Voyager II / Intersidereal Message)
& Johnny Harris & Starbow | 03.03.2010 | Disco Spaceship | | |
| 22. | Junction 12 EP Disc 2
(Converter / Amour King)
& Mortem | 19.02.2013 | IM:Ltd | | |
| 23. | Bone Marrow / Cut Deep | 24.06.2013 | Alignment | | |
