The Multiface One was released in 1986 for the ZX Spectrum 48K. It cost £29.95 and had the capability of saving data to cassette tape, ZX Microdrive, Opus Discovery (an external 3.5 inch disk drive) or Technology Research Beta (an interface that allowed 5.25 inch and 3.5 inch drives to be connected). The device worked on 128K Spectrums, but only if they were put in 48K mode. It featured a Kempston joystick port, and later revisions contained a switch that effectively 'hid' the device from software. Early versions had a composite video out port but this feature was later removed.
The Multiface Two was released for the Amstrad CPC 464 and had similar features to the Multiface One.
The Multiface 128 was released in April 1987 for the 128K version of the Spectrum, including the original +2 model. It worked in 128K or 48K mode and it existed in two versions; initially without a 'thru-port' and later, with one, both of which originally cost the same £44.95, but were later reduced to the same price as the Multiface One. The 128 introduced the ability to save to the +D and DISCiPLE disk systems, but lost its joystick port. The device was not compatible with the later Spectrum +2A or the Spectrum +3.
The Multiface 3, released in November 1987, was designed for the later Amstrad-made models of Spectrum that the 128 did not support. It existed in two versions; one with a 'thru-port', for £49.95, and one without, which cost £44.95. Both were later reduced to £29.95. The main feature of the Multiface 3 was its ability to save to +3 disk, a useful feature for +3 owners who wanted to avoid the long loading times of tapes.