XF-1
| Manufacturer | FR Fidelity-Research |
| Function | Amplifier, Phono (Moving-coil cartridge, Step-Up Transformer) |
| Country | Japan |
| Notes | High Definition Ring Core |
| Manufacturer | FR Fidelity-Research |
| Function | Amplifier, Phono (Moving-coil cartridge, Step-Up Transformer) |
| Country | Japan |
| Notes | High Definition Ring Core |