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    Yamaha S90 XS Weighted Synthesizer, 88-Key

    Get pro-quality synth sounds in a portable package with Yamaha's S90 XS synthesizer, featuring sounds straight from Yamaha's Motif series.

    This product has been discontinued or is no longer sold by SameDayMusic.

    We recommend this product instead:

    Yamaha Montage 8 Keyboard Synthesizer, 88-Key

    $3,999.99 - $0.00


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    Yamaha S90 XS 88-Key Weighted Synthesizer Product Description

    The Yamaha S90 SX Weighted Synthesizer Keyboard: Your Perfect Performance Partner.

    Players, take note. You want the ultimate keyboard instrument for performing and creating? We've put it all together for you. Exceptional quality instrument sounds. A piano sound to die for. A truly realistic, naturally expressive keyboard. Convenient, comprehensive control. Real-time controls for tweaking of the sound as you play. Audio recording to USB memory. Extensive computer music features. Ease of use, plus compact size and portability. Introducing the S90 XS Music Synthesizer. Designed specifically for players, particularly those who want the highest quality piano sounds and expression, the S90 XS is a performer's dream. Yet, casual players and hobby musicians will appreciate the exquisite sounds, advanced features and superb playability just as much as top professional artists.

    Features of the Yamaha S90 XS Synthesizer Keyboard:

    Sounds That Satisfy

    The best musical instruments start with top-quality sounds, and the S90 XS delivers all that - and more. The S Series features all the Voices, Performances, arps and Virtual Circuit Modeling effects found on the flagship MOTIF XS Music Production Synthesizer. Plus we've added a huge 142 megabytes dedicated exclusively to high-quality piano waveforms, for a total of 456 MB of instrument samples.

    Foremost among these new piano sounds are the new samples taken from Yamaha's world-renowned S6 concert grand piano. These fully capture the richly textured sound of that wonderfully expressive instrument, and provide a warm concert grand piano sound unavailable on any other keyboard. For variation, the MOTIF XS piano based on a Yamaha CFIIIS is also available.

    Conventional keyboards in the past had their sounds designed primarily for the listener. This time, however, our development team set out to primarily satisfy the player instead. We reasoned that when the performer hears and experiences the best possible sound, the performance would be the best possible, too! The result? The S90 XS is a genuine musician's instrument, one that truly inspires and stimulates the live performer as well as the music creator and arranger.

    Streamline Your Performance

    The S90 XS also lets you quickly and conveniently create your own custom Performances, with the amazingly fast and easy Performance Creator feature. It's never been easier to select a Voice, then quickly program Layers and Splits; even assigning a Drum Voice complete with arps 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; just a few button presses and you're there!

    The S90 XS gives you comprehensive, easy-to-use controls for your Performances as well, such as Octave and Transpose buttons for quickly changing the pitch, and a Tap Tempo button that lets you easily change the tempo of Arpeggio or MIDI sequence playback on the fly. You can assign virtually any parameter on the instrument to one of the Assignable Function buttons (using the S90 XS Voice Editor) and switch the parameter as you play; for example, turning specific sound elements of a Voice on or off. Moreover, the instrument lets you route a click sound to one of the assignable outputs. With this you could let your drummer hear just the click sound and lock into your Arpeggio or MIDI playback.

    Ideal for Live Performers

    The S90 XS has a host of other features that live performers will appreciate, such as the combo input jack that accepts both mic and instrument input. Simply plug in a microphone or guitar, tweak the INPUT GAIN knob (while checking the convenient PEAK lamp), and you're all set! Plus, you can use the Control Knobs to finely adjust the volume and even directly apply reverb or chorus to the sound.

    In the heat of live performance, the last thing you want is to have to search for a much-needed panel control - or worse yet press the wrong button and get a rude, unexpected sound change. That's why all the panel controls of the S90 XS have been designed and positioned for optimum, intuitive operation, especially for live performance. For example, you can quickly select a Part, turn it on/off, set Arpeggio on/off, switch Arpeggio Hold - all done easily with the top panel controls - and instantly tweak important sound parameters like reverb, filter and sustain via the Knobs and Sliders. And to prevent that dreaded sound change, there's a convenient Panel Lock button that instantly disables (or enables) the panel controls.

    Recording Direct to USB Memory

    If you've got a USB memory stick 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 even record your singing or playing as well. You can also record audio directly to the internal flash memory (192 MB) built into the instrument, without the need of a memory stick.

    And keep in mind that anything you've recorded to the memory stick, even audio files created on your computer, can be played back on the S90 XS - which means you can create your own custom audio backing tracks and perform along with them on the S90 XS. 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 with 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.

    Computer Control

    The S90 XS is a perfect companion for your computer music production system, too, serving both as a master keyboard and a full-function, multi-timbral tone generator. With the DAW Remote function and its 50 different control templates, you get amazingly easy, intuitive control over your main DAW software and VST instruments, directly from the panel controls! Special Remote Editor software lets you change and organize these templates.

    Cubase AI - a powerful and versatile audio/MIDI sequencer - is included with the instrument, giving you complete music production capabilities right out of the box. And for editing the S90 XS from your computer, there's the S90 XS Voice Editor. This provides convenient, comprehensive control over absolutely all the sounds, settings and functions of the S90 XS.

    The Yamaha Story

    Yamaha has been serving the needs of the music community since they manufactured their first reed organs in the late 1800's. Since then, they have expanded their vision to encompass every facet of the music industry. Their holistic approach includes musical instruments, live sound and recording equipment, and music instructional materials.

    As one of the few companies to produce both instruments and recording/sound reinforcement products, Yamaha Corporation is in a unique position to improve the overall quality of their line. Their technological advancements in engineering and design can be incorporated into their musical instruments for improved functionality. Similarly, they can ensure their live sound and recording gear is designed to take advantage of the enhanced functionality of their instruments.

    High quality standards are apparent in every product Yamaha manufactures. Guitars, basses, drums, keyboards, effects, cables, monitors, digital workstations, mixers, control surfaces, PA speakers, headphones, and more all receive the same attention to detail, for years of trouble-free use.

    Same Day Music is an authorized dealer of Yamaha products.

    Yamaha S90 XS Technical Description

    Technical Details of the S90 XS Synthesizer Keyboard:


    • Width - 58" (1,472mm)

    • Height - 6-3/4" (173mm)

    • Depth - 15-1/4" (385mm)

    • Weight - 49.6 lbs. (22.4kg)

    Control Interface


    • Number of Keys - 88

    • Keyboard Type - Balanced Hammer Effect Keyboard

    • Initial Touch - Yes

    • Aftertouch - Yes

    Other Controllers

    • Pitch Bend - Yes

    • Modulation - Yes

    • Control Slider - Assignable Control sliders x 4

    • Control Knobs - Assignable Control knobs x 4

    • Others - Assignable Fucntion button x 2, Data Dial, Input Gain


    • Type - graphic backlit LCD

    • Size - 160 x 64 dot

    • Backlight - Yes

    • Contrast - Yes


    • Tone Generation - AWM2 with Expanded Articulation

    • Multi Timbral Capacity - 16 Internal Parts + Mic Input Part

    • Wave ROM Capacity - 456 MB (when converted to 16-bit linear format), 2,772 waveforms

    • Maximum Polyphony - 128

    • Preset Voices - 1,024 normal voices + 64 drum kits

    • GM Voices - 128 normal voices + 1 drum kits

    • User Created Voices - 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


    • Preset Arpeggios - 6,779 types

    • User Created Arpeggios - 256 types (when loading the User Arpeggio data of MOTIF XS)

    • Playback Data Format SMF Format 0/1 (playback only)

    Storage and Connectivity

    • Internal Memory - 192MB

    • AC Input - Yes

    • Headphone Jack - x1

    • Foot Control Jack - x2

    • Foot Switch Jack - x2 (Sustain, Assignable)

    • Microphone Input - x1 XLR Combo


    • Assignable Output - L, R (standard Phone Jack)

    • Line Out - L/MONO, R (standard phone jack)

    • USB Connection - TO DEVICE, TO HOST

    Power Supply

    • Power Consumption - 25W

    Included Accessories

    • Bundled Software - Cubase AI

    • AC Power cord

    • Owner's Manual

    • Owner's Manual CD-ROM (containing Reference Manual and Data List)

    Same Day Music is an authorized dealer of Yamaha products.

    User Reviews for Yamaha S90 XS 88-Key Weighted Synthesizer

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