Yamaha DX7 II-FD Digital Programmable Algorithm Keyboard Synthesizer (w/ Cartridge)Yamaha DX7 II FD The Yamaha DX7, arguably one of the most famous FM synthesizers in history and used by the likes of Talking Heads, Kraftwerk, Underworld and Phil Collins, got a significant update in 1987 with the release of the DX7 II FD. Updates included a restyled and stronger chassis, physical plastic buttons, upgrade from 12 bit to 16 bit operation as well as an increased patch memory (32 voices to 64) and the addition of bi trimbality. This