Condition: Good. This S90 is in full working order. All the sliders and switches work perfectly and the keyboard is responsive to play. The cabinet has various marks and scuffs, but these are all cosmetic and have no effect on the sound or playability.

The Yamaha S90 is a premium 88-note weighted keyboard designed for musicians seeking expressive playability and a vast array of high-quality sounds. Featuring Yamaha’s acclaimed MOTIF synthesiser sound engine, it delivers an immersive experience with a rich three-layer stereo grand piano and a diverse collection of electric pianos, strings, brass, synths and drum kits.

Main Features

• 88-note Balanced Hammer Effect keyboard with velocity sensitivity and aftertouch for nuanced expression
• AWM2 sound engine with 64-note polyphony and 16-part multitimbral operation
• Rich three-layer stereo grand piano alongside 384 preset voices and 48 drum kits from the renowned MOTIF sound library
• Four-part Performance mode for flexible layering and split configurations
• Built-in effects including reverb, chorus, insertion effects and a five-band master EQ for tailored sound shaping
• Interactive arpeggiator offering musical phrases, drum grooves and classic patterns
• Four assignable sliders and four-zone master keyboard control for personalised sound manipulation
• USB-MIDI and traditional MIDI In/Out/Thru connectivity for seamless integration
• Playback of Standard MIDI Files from SmartMedia cards
• Three slots for optional Yamaha Modular Synthesis Plug-in boards—expand your sonic palette

Perfectly suited for both stage and studio use, the S90 offers intuitive hands-on controls, flexible layering and splitting capabilities, built-in effects, and an interactive arpeggiator to inspire creativity. Extensive MIDI functions and three expansion slots add to its adaptability, making it ideal for professional setups.

Frequently Asked Questions ➤ What type of keyboard action does the Yamaha S90 have?
The Yamaha S90 features an 88-note Balanced Hammer Effect keyboard with velocity sensitivity and aftertouch, providing a realistic and expressive piano-feel.
➤ Can I layer and split sounds on the S90?
Yes, the S90 offers Four-part Performances that allow you to layer and split sounds flexibly across the keyboard for versatile playing options.
➤ How many sounds and drum kits are included?
The keyboard includes 384 preset voices and 48 preset drum kits, plus a General MIDI sound bank, sourced from Yamaha’s well-regarded MOTIF synthesiser sound library.
➤ Does the S90 support external MIDI devices?
Yes, it provides USB-MIDI along with standard MIDI In, Out, and Thru ports for full compatibility with other MIDI equipment.
➤ Can I expand the sound library on the Yamaha S90?
Absolutely. The S90 has three expansion slots for Yamaha Modular Synthesis Plug-in boards, enabling you to add new sounds and synthesis options.

Outside the UK?

Please note that shipping costs outside the UK are very approximate and can vary radically. Please contact us with your Country and Post/Zip Code for an accurate quote. Many thanks. Please also note if you are outside the UK we will not charge you tax on your purchase but you may be liable for import duty in your country.

Please also note that all our stock is sold for the UK market. If you are buying from outside the UK, please check that it is suitable for use in your country before purchase.