| Releases: | ||||
|---|---|---|---|---|
| GPH01 | Trybet | Nautical (12") | 1997 | |
| GPH02 | Mike Parker | Skakuhachi (12") | 1998 | |
| GPH03 | Mike Parker | Vertebrae Waltz (12") | 1999 | |
| GPH04 | Mike Parker | Voiceprint (12") | 1999 | |
| GPH05 | Mike Parker | Drainhum ◄ (2 versions) | 1999 | |
| GPH06 | Mike Parker | Melencolia ◄ (2 versions) | 2000 | |
| GPH07 | Mike Parker | Copper Variations ◄ (3 versions) | 2000 | |
| GPH08 | Mike Parker | Amalgamated (12") | 2001 | |
| GPH09 | Mike Parker | Caesura (2x12") | 2003 | |
| GPH10 | Mike Parker | Inversions Vol. 1 (12") | 2004 | |
| GPH11 | Mike Parker | Inversions, Vol. 2 ◄ (2 versions) | 2006 | |
| GPH12 | Mike Parker | Inversions, Vol. 3 (12") | 2006 | |
| GPH13.5 | Various | GPH13.5 (12", Ltd) | 2008 | |
| GPHCD01 | Mike Parker | Dispatches (CD) | 2001 | |