Bandmaster Powerhouse
| Manufacturer | GR International |
| Function | Drum Machine (8-track cartridges) |
| Produced | 1977 |
| Form Factor | Tabletop |
| Signal Path | Analog Hardware |
| Channels | 2 Channel |
| Notes | This drum machine plays back pre-recorded drum and percussion loops via 8-Track cartridges. Each cartridge has 4 different rhythm styles, each with 2 variations. There are 14 known tapes, 6 of which are very rare |