Revision 3, it uses CEM chips. The first Prophet-10s used an Exatron Stringy Floppy drive for saving patches and storing sequencer data. Sequential later moved to a Braemar tape drive, which was more reliable and could store about four times as many sequencer events. In 2020, Sequential reissued the Prophet-5 along with a new version of the Prophet-10, the Rev 4. Features Early Prophet-5s use voltage-controlled oscillator (VCO), filter and amplifier chips designed by E-mu Systems and manufactured by Solid State Music (SSM). Revision 3 Prophet-5s used Curtis CEM chips manufactured by Curtis Electromusic Specialties. Some owners maintain that SSM oscillators produce a richer timbre. However, the SSM oscillators rendered the instruments unstable and prone to detuning over time. CEM chips have remained more stable. Unlike its nearest competitor in the 1970s, the Yamaha CS-80, the Prophet-5 has patch memory, allowing users to store sounds rather than having to reprogram them manually. It has a proprietary serial interface that allows the user to play using the Prophet Remote, a sling-style keytar controller; the interface cannot connect the Prophet-5 to other devices. Sequential produced a MIDI interface that could be retrofitted to later Prophet-5 models. Third-party MIDI interfaces have also been offered. Impact Before the Prophet-5, synthesizers required users to adjust cables and knobs to change sounds, with no guarantee of exactly recreating a sound. The Prophet-5, with its ability to save sounds to patch memory, facilitated a move from synthesizers creating unpredictable sounds to producing "a standard package of familiar sounds". According to MusicRadar, the Prophet-5 "changed the world – simple as that". The Prophet-5 became a market leader and industry standard. The Cars keyboardist Greg Hawkes used the Prophet-5 for the band's hits "Let's Go" (1979) and "Shake It Up" (1981). Kraftwerk used it on their 1981 "Computer World" Tour. David Sylvian used it on Japan's 1982 hit single "Ghosts" and Richard Barbieri of the same band has used it frequently. Michael Jackson used it extensively on Thriller (1982), and Madonna used it on Like a Virgin (1984). Peter Gabriel considered the Prophet-5 his "old warhorse" synthesizer, using it for many sounds on his 1986 album So. Brad Fiedel used a Prophet-10 to record the soundtrack for The Terminator (1984), and the filmmaker John Carpenter used both the Prophet-5 and Prophet-10 extensively for his soundtracks. The Greek composer Vangelis used the Prophet-5 and the Prophet-10, the latter for example