The Multiface One was released by Romantic Robot UK Ltd in 1986 for the ZX Spectrum 48K. It cost between £30-40 and could save data and programs to cassette tape, ZX Microdrive, or the Opus Discovery external 3.5-inch disk drive. It featured a Kempston joystick port. It also allowed the user to view and edit the contents of memory - either for debugging programs or for cheating at games. A pass-through port in on the back of the unit allowed other peripherals to be connected at the same time as the Multiface.

This is the model with the toggle switch, that makes the interface invisible