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.

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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
June 13, 2011 @ 8:54 am
i have a used Yamaha SY 99 in an Amptown Case to sell:


also to
June 13, 2011 @ 7:33 am
It has been used also by David Paich/TOTO.
May 24, 2011 @ 3:51 am
@ marc berry
Thanks, perhaps we can talk via emails?
Mine is:
phreaque.modi "at" yahoo "dot" com
marc berry
May 22, 2011 @ 1:06 pm
I'lm selling my sy99, if you're still interested in buying? It's in perfect working order. It only has some cosmetic damage to the right hand plastic end panel due to the mains transformer overheating and burning out. The faulty transformer was replaced (This happened prior to me purchasing it - I've never had a problem of any sort with it, since). All buttons / sliders / wheels work perfectly. I don't think its ever been used very much, being one of many syths the studio had. I've had it for 3 years
May 5, 2011 @ 5:08 pm
I have one that I love but haven't used it in some time. Too many synths. I love the action of the keys, which is like the first DX7's that everybody loved (the action of DX7, more so than the sound). The extra mod wheel has been super invaluable as well. MY SY99 was my master keyboard controller for a long time. And the thing has mountains of sounds, layers, samples.... Monster synth!

Since someone DID ask, I'm selling mine. So if it's OK w/ the mods, just email me at audiolab@pacbell.net. I'll put it on ebay or something to make it all safe and legit. Hard case with it as well.
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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 - 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.

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