| Name | Notes | Retail | Average |
|---|---|---|---|
| GFT-1 | their first tuner | ||
| GFT-1a | digital, 16 presets, 14 lbs | ||
| GFT-2 | digital, 14 presets, 14 lbs | ||
| GFT-555 | digital, | ||
| GFT-555 mkII | digital, autoscan |
| Name | Notes | Retail | Average |
|---|---|---|---|
| GFS-1 | 4 pair speaker selector | ||
| GFS-3 | 3 pair speaker selector | ||
| GFS-4 | 4 pair speaker selector | ||
| GFS-6 | 6 pair speaker selector |