Featuring a 61-key layout, 16-voice polyphony and a six envelope generator in the VCA, the Yamaha DX7 remains one of the cornerstones of digital FM synthesis. Found in the rigs of Brian Eno, Crystal Method and the Beastie Boys since its introduction in 1983, the DX7 combines vintage cool, professional credibility and an array of metallic sine-wave synthesis for a welcome addition in any enthusiast's collection.