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Yamaha S90XS 88-Key Balanced Weighted Hammer Action Synthesizer   (Open Box)
Ships Internationally
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Product# 620709

Superior sound, control, and playability optimized for the performer.

The Yamaha S90 XS Music Synthesizer is an exceptional keyboard for performing and creating. It's a realistic, naturally expressive synth with a true piano sound. Its highlights include convenient, realtime controls for adjusting the sound as you play, the ability to record audio to USB memory, extensive computer music features, ease of use, and compact size and portability. The Yamaha S90 XS is designed specifically for players who want high-quality piano sounds and expressions; casual players and hobby musicians will appreciate the synthesizer's exquisite sounds, advanced features, and superb playability just as much as professional artists.

Sounds that satisfy
The S Series features all the voices, performances, arpeggios, and virtual circuit modeling effects found on Yamaha's flagship Motif XS Music Production Synthesizer. The S90 XS adds a huge 142 megabytes dedicated exclusively to high-quality piano waveforms, for a total of 456 megabytes of instrument samples. Foremost among these piano sounds are the samples taken from Yamaha's world-renowned S6 concert grand piano. This synthesizer fully captures the richly textured sound of the wonderfully expressive S6, and provides a warm, concert grand piano sound.

In the past, conventional keyboards had sounds designed primarily for the listener. The S90 XS, however, was designed to satisfy the player. Yamaha reasoned that when a performer hears and experiences the best possible sound, their performance would be the best possible too. The result is the S90 XS, a genuine musician's instrument that truly inspires the live performer as well as the music creator and arranger.

Streamline your performance
The S90 XS electronic keyboard lets you quickly and conveniently create your own custom performances with the amazingly fast and easy Performance Creator feature. Select a voice, then quickly program layers and splits-even assign a drum voice complete with arpeggios to create your perfect performance. Let's say that you're playing a piano voice and you want to layer a string sound on top of it. Simply press the layer button, then select the desired voice category and voice, and store your new performance with the press of a button.

The panel controls of the Yamaha S90 XS have been designed and positioned for optimum, intuitive operation, especially for live performances. For example, with the top-panel controls you can quickly select a part, turn it on and off, set arpeggios and turn them on and off, and switch on arpeggio hold, in addition to instantly tweaking important synthesizer parameters using the knobs and sliders.

Ideal for live performers
The S90 XS keyboard synth has a host of other features that live performers will appreciate, such as the combo input jack that accepts mic input. Just plug in a microphone, adjust the input gain knob (while checking the convenient peak lamp),
and you're set. You can also use the control knobs to finely adjust the volume and directly apply reverb or chorus to the sound.

Recording direct to USB/internal memory
If you've got a USB memory device or thumb drive, you can plug it into the S90 XS and record your performance as audio data. This remarkable feature lets you instantly capture what you play on the keyboard (including arpeggio playback) to your USB device. If you've connected a microphone or guitar, you can record your singing or playing as well. You can also record audio directly to the internal flash memory (192 megabytes) built into the instrument without the need of a memory device. Keep in mind that anything you've recorded to the memory device (even audio files created on your computer) can be played back on the Yamaha S90 XS, which means you can create your own custom audio backing tracks and perform along with them. For example, you can create a basic song track beforehand, then sing and solo over it during your performance or add guitar parts and vocal harmonies to be played back during your live performance. There's also a useful song chain function that lets you string together separate recordings and create a convenient backing track "set list" for your gigs.

88-key balanced keyboard
The S90 XS has balanced hammer-effect on its 88 keys for those players who need a full-range, full-scale keyboard. It's exceptionally portable and absolutely perfect for live performers and gigging musicians.

Software integration
The Yamaha S90 XS is also a perfect companion for your computer music production system, serving both as a master keyboard and a full-function, multitimbral tone generator. With the Digital Audio Workstation (DAW) remote function and its 50 different control templates, you get amazingly easy, intuitive control over your main DAW software and Virtual Studio Technology (VST) instruments directly from the panel controls. Moreover, the Voice Editor and Remote Editor software gives you convenient, comprehensive computer control over all the sounds, settings, and functions of the S90 XS keyboard synth.

  • 88-keys on a balanced, hammer-effect, full-range, full-scale keyboard
  • A warm, concert grand piano sound
  • 4 knobs, 16 backlit LEDs, and lots of buttons for direct hands on control
  • All of the voices, performances, arpeggios, and virtual circuit modeling effects of the Yamaha MOTIF XS Music Production Synthesizer
  • 456 megabytes of instrument samples
  • Performance Creator feature for instant splits, layers, and drum performances
  • Convenient controls to create your own custom performances
  • Optimum ease-of-operation with top-panel controls
  • Combo input jack that accepts mic input
  • Control knobs for fine volume adjustment
  • Control knobs to directly apply reverb or chorus
  • Accepts USB memory devices
  • Direct-to-USB stereo audio record & playback
  • 192 megabytes of internal flash-drive memory (18 minutes)
  • Provides the ability to create your own custom audio backing tracks and perform along with them
  • Allows player to string together separate recordings and create a convenient set list using the song chain function
  • Functions as a master keyboard and a full-function, multitimbral tone generator
  • Digital Audio Workstation (DAW) remote function and 50 different control templates
  • Voice Editor and Remote Editor software provides convenient, comprehensive computer control over all sounds, settings, and functions
  • 1/4" XLR combo jack A/D input (with front panel controls) for adding vocals and guitars

An amazing keyboard that gives you everything you'd expect from Yamaha and much more.


S90XS 88-Key Balanced Weighted Hammer Action Synthesizer

  • Size/Weight:
    Dimensions: 6-3/4"H x 58"W x 15-1/4"D
    Weight: 49.6 lb.

    Control Interface:
    Number of Keys: 88
    Type: Balanced Hammer Effect Keyboard
    Initial Touch: Yes
    Aftertouch: Yes
    Other Controllers:
    Pitch Blend: Yes
    Modulation: Yes
    Control Slider: Assignable Control sliders x 4
    Control Knobs: Assignable Control sliders x 4
    Others: Data Dial
    Type: graphic backlit LCD
    Size: 160 x 64 dot
    Backlight: Yes
    Contrast: Yes

    Tone Generation:
    Tone Generating Technology: AWM2 with Expanded Articulation
    Multitimbral Capacity: 16 Internal Parts + Mic Input Part
    Ware ROM Capacity: 456 MB (when converted to 16-bit linear format), 2,772 waveforms
    Number of Polyphony (Max.): 128
    Number of Voices: Preset: 1,024 normal voices + 64 drum kits, GM: 128 normal voices + 1 drum kits, User: 128 x 4 (Bank 1-3: selected and copied from Preset bank), Normal Voice + 32 drum kits

    Reverb: 9 types
    Chorus: 22 types
    Insertion: 53 types x 8 blocks
    Master Effect: 9 types
    Master EQ: 5 bands
    Part EQ: 3 bands, stereo

    Number of Arpeggio: Preset x 6,779 types
    User x 256 types (when loading the User Arpeggio data of MOTIF XS)
    Compatible Data Format:
    Playback: SMF Format 0/1 (playback only)

    Storage and Connectivity:
    Storage: Internal Memory: 192MB
    AC In: Yes
    Headphones: Phones (standard stereo phone jack)
    Foot Control: Foot Controller 1, 2
    Foot Switch: Foot Switch 2 (Sustain, assignable)
    Microphone: Mic Input (combo jack)
    MIDI: MIDI In/Out/Thru
    Assignable Out: Assignable Output L, R (standard phone jack)
    Line Out: Output L/Mono, R (standard phone jack)
    USB To Device: USB (To Device)
    USB To Host: USB (To Host)

    Power Supply
    Power Consumption: 25W

    Bundled Software
    CD-ROM: Cubase Al Disc 1

Review Snapshot

by PowerReviews
YamahaS90XS 88-Key Balanced Weighted Hammer Action Synthesizer

(based on 8 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 1 Stars



Reviewed by 8 customers

Displaying reviews 1-8

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(2 of 2 customers found this review helpful)


Great instrument

By Caio

from CA

About Me Experienced

Verified Buyer


  • Realistic Sound
  • Responsive / Good Action
  • Touch Sensitive Keys


    Best Uses

      Comments about Yamaha S90XS 88-Key Balanced Weighted Hammer Action Synthesizer:

      Fantastic sound, specially the piano. The pre-programmed grooves are great for jamming. Great instrument.

      (9 of 10 customers found this review helpful)



      By calicoyote

      from Sacramento, CA

      About Me Experienced

      Ask me a question


      • Easy to Use
      • Realistic Sound
      • Responsive / Good Action
      • Touch Sensitive Keys


      • Heavy

      Best Uses

      • Live Performance

      Comments about Yamaha S90XS 88-Key Balanced Weighted Hammer Action Synthesizer:

      Amazing keyboard! Great piano sounds, key action. Looks super cool too! Everything is easy accessible via the topside buttons. Can setup new performances, splits, layers quickly. A great feature is the USB device slot. For rehearsals with me and singer, we plug her mic into the mic jack, insert memory stick and quickly and easily record rehearsals. Record and playback are a snap. The only real suggestion I have is for Yahama to create footswitch to change arps instead of lifting left hand off the keyboard. However, its still relatively easy to make in performance changes. Yamaha customer service is great, as I've had a few questions and they've been very helpful. You can control two parts with different expression pedals. More voices than I know what to do with and all sound great. Strings, organs, keys, guitars, bass all sound real. And of course, the best piano sounds, especially the S6. There are multiple S6 samples, along with multiple grands & upright, tacky, house piano, etc.

      (10 of 13 customers found this review helpful)


      Love it, buy it, no complaints so far

      By Michael Peterson

      from Rigby, ID

      Comments about Yamaha S90XS 88-Key Balanced Weighted Hammer Action Synthesizer:

      This product delivered exactly what it said. The only thing I was surprised with was that the reference manual & voice/drum listings were on pdf files on a cd rom, however, after seeing the size of these manuals it makes perfect sense. It make it nice to be able to do a search on the computer for a specific subject instead of fingering through manually. This item does not have speakers so make sure you get some powered speakers too.
      This keyboard has so many features, it blows my mind. I have been playing with it continuously for about a month & I keep finding new stuff.
      I have only owned this for a month, but I have found no problems so far. I have used every input/output on the keyboard & have no complaints so far.

      (19 of 19 customers found this review helpful)


      It Really Is the Best

      By cloud9surfer

      from Kansas City, KS

      Comments about Yamaha S90XS 88-Key Balanced Weighted Hammer Action Synthesizer:

      I've recorded 3 CD's with my S90 with plans to do more, and I have no intention of trading this in for another keyboard. All things considered, you everything at your fingertips to record an entire album -- drum machine, bass, synth, keyboard, etc. -- using this instrument.For piano enthusiasts, the real piano feel is uncanny. No other brand apart from Yamaha has been able to mimic the hammer action on an acoustic piano so closely. Of course, I still prefer the weighty action of a grand to the S90, but the feel considering this is a keyboard is still pretty amazing.Whether live or in studio, the S90 has everything you need. I encourage anyone who purchases one of these instruments to do plenty of experimenting. As familiar as you'll become with this thing, it will still be surprising you a year later. Let's give the S90 the respect it's due: it's not a synth, a controller, or a piece of electronics. This is a genuine musical instrument!

      (11 of 11 customers found this review helpful)


      Awesome Keyboard

      By waycoolpianodude

      from Oregon

      Comments about Yamaha S90XS 88-Key Balanced Weighted Hammer Action Synthesizer:

      What an awesome keyboard...I waited MONTHS for this when it first came out. The anticipation and the expectations couldn't have been higher. My expectations were SO high that I feared I'd be let down once it finally arrived. But amazingly, I was not.I play in a working band and use this keyboard as the centerpiece of my rig, which includes two other keyboards (Rolands) and two other rack synths(one's a Triton). I've used all brands of weighted keyboards over the years, and have FINALLY got the perfect one. Great piano sound and feel. Best I've ever had. I've had great digital pianos too. But to use them to trigger patches which require a mod wheel or a pitch bend didn't work so well, of course.It is a GREAT synth, too. Holy cow...having played keyboards for about thirty-five years, this is EASILY the most amazing kybd I've ever played. I've had the best synths...the best pianos...but never thought I'd ever play on one kybd that I enjoyed more than all of them.As keyboardists, we all have our preferences...our favorites. But no matter who you are, or what you will at the very least seriously respect this keyboard if you ever get to use one. Just awesome.

      (6 of 8 customers found this review helpful)


      both a Stage Piano & Synth in ONE!

      By pdbhusker

      from Gering, Nebraska

      Comments about Yamaha S90XS 88-Key Balanced Weighted Hammer Action Synthesizer:

      The Yamaha s90xs is a beast. I?ve owned many keyboards in my 35+ years and this is the top of the line product for both performing and studio work. I?m a music educator as well as a performer? and this synth/stage piano combo is ideal for the live stage situation. I have a 4 piece band that plays at a local coffee shop and this is a perfect keyboard for the performer who wants the right sound ?right now?. The engine is the same as the ?flagship? MOTIF XS? so there are endless possibilities with sounds. I have played the Motif XS and have found the ?learning curve? to hinder the live performer? it takes too long to feel comfortable using. Well, here comes the answer. In my humble opinion? I could see this? S90XS or the S70XS being the answer for those who struggle with the large learning curve that accompanies the MOTIF.Don?t get me wrong, if you are just looking for a keyboard that you only need limited sounds for playing? the Yamaha CP300 or the Yamaha CP30?might be a better ?stage piano? for you? although I have lugged a CP300 around for the past summer and it weighs 70+ pounds?with case and is a back breaker to lift out of the case on to the stand.So far, there are so many features that the s90xs has that I?m still learning about?. But I love exploring? and the more I learn? the more I find that they?ve gone that ?extra mile? for the performer. Honestly? for the bucks? it is an awesome keyboard? it looks great? it feels great to play? and most importantly? it sounds unbelievable. Understand, that there are no speakers with this keyboard? but I come from the ?old school? that if it has speakers? it just one step away from being a Casio? sorry? I know that this is not the case today? but this can be a concern for some. So, bring your powered speakers? or a suitable amplifier. Not a big deal for most performers. It truly measures up to all the hype! It was worth the wait. Consequently, this is the most well built instrument from the keys to the housing. All the buttons are very sturdy and look as though they?ll handle the live performance. Plus, the button choices are lit up for dark performance settings? the display is not overwhelming? partly because most all your choices are on the top of the keyboard so that you can edit ?on the fly?. Now that?s cool. Some keyboards I?ve owned? the display is so big, it?s like looking at a monitor of a cartoon. The s90xs/s70xs are very classy? very professional looking. one strange thing is that Yamaha at the present time have a case that fits the length of this keyboard... go figure.

      (6 of 7 customers found this review helpful)


      This thing can do ANYTHING!!!

      By Anonymous

      from Undisclosed

      Comments about Yamaha S90XS 88-Key Balanced Weighted Hammer Action Synthesizer:

      I got this keyboard 3 weeks ago and I love it! I don't actually play a lot of synth but the action is what sold me on it. It's the most piano-like feeling keyboard I found. I do a lot of chording and it's awesome for that. It's extremely easy to use. There are a lot of features that can be confusing if your not familiar with them. I was also looking at the Roland RD 700GX but liked the way this one played and the recording capabilities this one has. If you've got the time to play around with it this is your keyboard but if you're looking for something simpler but still has the great piano-like feel you should check out the P-155. Bottom line, you WON'T be sorry!

      (8 of 8 customers found this review helpful)


      Wicked cool synth

      By John-XXc34

      from New Hampshire

      Comments about Yamaha S90XS 88-Key Balanced Weighted Hammer Action Synthesizer:

      This thing is awsome! I own it and play prof. in night clubs. this is an incredible unit. Ease of use during play. The learning curve is a bit more than I would have liked, but I must say Yamaha's tech servs are just as good as the keyboard. Send them a question via email and you get a response w/ in 24 hours every time. Got to get this unit. The mega voices are just unbelievable. Great Value for what you get. Closest Hammond B-3 sounds w/ leslie I've heard!

      Displaying reviews 1-8

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