| Releases: | ||||
|---|---|---|---|---|
| OPT 12001 | Xpansions | Elevation ◄ (2 versions) | 1990 | |
| OPT 12002 | Cool In The Shade | Summer Breeze ◄ (2 versions) | 1990 | |
| OPT 12003 | 100 Hz | Low Frequency Overload (12") | 1990 | |
| OPT 12004 | O.Y.C. | Monkey Wrench (12") | 1991 | |
| OPT 12005 | High Authority | I'm The Man ◄ (2 versions) | 1991 | |
| OPT 12006 | Lyrical Thunder | Let Loose ◄ (2 versions) | 1991 | |
| OPT 12007 | Firecracker | Firecracker ◄ (2 versions) | 1990 | |
| OPT 12007R | Firecracker | Firecracker (Remix) (12") | 1990 | |
| OPT 12008 | Marvin D | Make That Move (12") | 1991 | |
| OPT 12008R | Marvin D | Make That Move (12") | 1991 | |
| OPT 12009 | 100 Hz | Catching Spiders ◄ (2 versions) | 1991 | |
| OPT 12009R | 100 Hz | Catching Spyders Remix (12") | 1991 | |
| OPT 12011 | Neutral Zone, The | Outer Space ◄ (2 versions) | 1990 | |
| OPT 12012 | Groove Collision (2) | The L.O.V.E. (12") | 1991 | |
| OPT 12014 | Izit | Make Way For The Originals / Make Way For The Solos (12") | 1991 | |
| OPT 12014 R | Izit | Make Way For The Originals (12") | 1991 | |
| OPT 12017 | Tiki (4) | Funki Fing (12") | 1991 | |