Yamaha DX7S / DX7IID / DX7IIFD

Yamaha DX7IIFD Image

The DX7, a classic FM synth, gets a make-over with three significant updates. The updated models feature a more sturdy chassis with actual push-buttons replacing the cheaper and less reliable membrane buttons of the original DX7. The two real time sliders (that allow for control of user-programmable parameters in real time) are larger than before. Internally, the biggest improvement is the updated 16-bit digital circuitry for cleaner and much less noisy sound quality. Patch memory has also been doubled from 32 to 64 voices. Additional general improvements include enhanced MIDI support, micro-tuning capabilities, aftertouch controlled pitch bending, and multiple LFOs.

The DX7IID and DX7IIFD (pictured) models also added bi-timbrality with keyboard split and layering capabilities. This allows two voices to be layered in dual mode, providing very rich combinations of sounds that would otherwise be impossible with the original DX7. Voices could also be split across the keyboard, for a two part multi-timbral performance capability; again, impossible with the original DX7 (or the DX7S, as the S stands for single timbre).

The DX7IIFD added a Floppy Drive (that's what the FD stands for) offering one megabyte of memory space (equal to 40 RAM cartridges) for thousands of voices, fractional scaling, SysEx data and more.

DX7 Centennial

Pictured above in silver and gold is the DX7 Centennial, released in 1987 to celebrate Yamaha's 100th anniversary. Not just a new paint job, this limited edition model has 64-voice internal RAM memory and 64-performance memory, 32-note polyphonic stereo output (2 x 16 voices), and a 76-key velocity and after-touch sensitive keyboard that glows in the dark. Only about 300 were made and it originally retailed for $3,500!

Like the DX7, these updated models may have been used by The Crystal Method, Kraftwerk, Underworld, Orbital, Talking Heads, Brian Eno, Depeche Mode, D:Ream, Front 242, U2, A-Ha, Enya, The Cure, Stabbing Westward.

Lookup Yamaha DX7S / DX7IID / DX7IIFD Prices

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Are you looking to buy or sell a Yamaha DX7S / DX7IID / DX7IIFD? Post an ad in Gear For Sale or a request in Gear Wanted. For spare parts and repair services check out Gear Services & Other Goods. Our forums also has a Buyer’s Guide section where you can ask for advice on buying synthesizers.

49 Visitor comments
October 22, 2013 @ 5:27 pm
Can somebody give me the yamaha dx7 IId factory sounds, please I erase them by mistake :'(
July 6, 2013 @ 12:45 pm
"Never liked the TG77 myself. Sounded less direct for some reason and noisier.. "

You're kidding, right? The 77 series has better outputs than all synths that came before it. (And 'some say' the 99 is even better.)
April 16, 2013 @ 2:44 pm
Pls, my yamaha dx7ii has been working for some time now, suddenly the sound just stop i.e the keys are not responding again. Anybody with solution please help
April 15, 2013 @ 7:14 pm
I've owned a DX-7IID for several years. Came with a bunch of original DX7 and DX7II cartridges loaded up with some nifty tones. Hundreds of 'em. No issues outside replacing the internal battery a while back and a few sticky buttons which were easilt cleaned. Great synth but I do not play it nearly enough...just too much in love with vintage analogs to spare the time to tame (and learn to program) FM synthesis. I'm going to take some time to roll my own and see where classic FM can take me. Should be an interesting journey!
February 28, 2013 @ 5:17 am
@Haza/ Fred > That is mostly to do with the different velocity scaling! If you whack the SY/TG velo scaling up it sounds just like a DX7. The DX has a limited velo range so a softer press can make it go 'zoooooaaaaaaaaw' more easily (the fundamental/overtones you speak of). The exact same thing is done on an SY/TG77 merely by using the correct velocity scaling in the common settings!

Had them back to back. Identical doing simple DX7 sounds.
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  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 16 voices (8 voices in Dual mode)
  • Oscillators - FM Tone Generator (6 operators and 32 algorhythms)
  • LFO - Sine/Square/Tri/SAW up/SAW Down/Random
  • Filter - None
  • VCA - 6 Envelope generators 8 parameters each
  • Keyboard - 61 keys, Velocity and Aftertouch
  • Memory - Internal: 64 voices/32 performances, external: 128 voices/64 performances
  • Control - MIDI IN/OUT/THRU
  • Weight - 23 lbs. (10.5 kg)
  • Date Produced - 1986 - 1989
  • Resources & Credits
  • Images from
    and MatrixSynth.

    Thanks to Joel Lingenfelter and Scott Marcotte for providing some of this information.

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