Yamaha SY99

Yamaha SY99 Image

The SY99 is like having a super-sized sampling workstation with the synthesis and sounds of a DX-7mkII. Basically the same as the SY77 it features a larger 76 note keyboard with upgraded synthesis, sample memory, sequencer and more! For its synthesizer section it employs a 6 operator AFM synth engine similar to, if not better than, the original DX's. Sampled preset sounds (AWM2) can then be fused with the AFM sounds to create entirely wild new sounds! And these sounds are quite shapeable thanks to the resonant multi stage Time Variant Filters which offer the ability to recreate the warm analog sounds of classic synths, or something entirely new.

There's an enhanced on-board sequencer section for creating your songs right on the SY99. It's got 16 tracks, from which channel 16 belongs to the built-in drum synthesizer. The sequencer can hold up to 27,000 notes, 99 patterns and 10 songs. And since the SY99 features 16 voices of polyphony for the AFM section, and another 16 voices for the sampled sounds, there are 32 voices to go around to build your song. Not to mention there are 2 digital multi-effects processors which include reverb, delay, chorus, panning and more! Professional features for those of you want to really control and shape your sounds using the unique sounds (and complex synthesis) of a Yamaha FM synth with some special features up its sleeve. It has been used by Vangelis and Chick Corea.

Lookup Yamaha SY99 Prices

The link above will take you to an eBay search for this synth to see active listings with more images, specs and information. If you don't find it there, try looking in our forum marketplace. Our marketplace gets thousands of visits every week so make sure to check back often if you want to buy or sell a synth.

Related forum topics


Are you looking to buy or sell a Yamaha SY99? 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.

55 Visitor comments
January 9, 2013 @ 10:50 pm
Also selling an SY99, 2 of them actually. See the ebay auctions under username: soldsoforgetaboutit, will ship internationally, just ask for a quote.
January 8, 2013 @ 4:04 am
Brian: Very interested in buying an SY99. Please email me on dv1989@gmail.com if you still have it! Cheers.
Cleo Phatra
December 17, 2012 @ 1:43 am
Without doubt, one of the greatest synthesizers ever produced. It can produce a huge range of amazing sounds and has maybe the best feeling keybed ever and three mod wheels for expression. Can sound gutsy and analog, airy and mystical, or give you crystalline FM (it has perhaps the ultimate FM engine)-- and sometimes give you all three in one evolving patch And it's physically constructed to match the sonic monster it is-- it's huge! Already a classic to those who know.

Don't look at a spec sheet and see where it falls short... meet it on it's own ground, play, and listen...
December 12, 2012 @ 4:36 am
Just bought an used one. Wow, many lovely fd with hundreds of sounds. It seems not so different from my EX7 an EX5R synths, probably as fas as AWM2 is concerned. I've not yet tried to edit new sounds, it seems not so easy. An excellent synth, anyway. :-)
November 13, 2012 @ 7:58 am
Selling SY99. Excellent condition. Home use only.
VSE Rating


User Rating

Rated 4 (502 Votes)

  • 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 - 32 voices: 16 AFM voices, 16 (AWM2) sampler voices
  • Oscillators - 6 operator AFM synth; AWM2 sample ROM with 267 waveforms
  • Filter - Multi-stage Time Variant Filters with resonance
  • Arpeg/Seq - 16 track sequencer, 27,000 note capacity, 99 patterns, 10 songs
  • Effects - 2 internal digital effects processors with 63 effects
  • Keyboard - 76 notes with velocity and aftertouch
  • Memory - 128 preset & 128 user patches, 16 preset & 16 user multi-patches
  • Control - MIDI
  • Date Produced - 1991
  • Resources & Credits
  • Images from Synthony.

Errors or Corrections? Send them here.