The Freedom to Fully Express Yourself

Casio's Digital Piano Technologies Come Together in the Privia PX-S1100 and PX-S3100
The Privia PX-S1100 and PX-S3100 have been designed to blend seamlessly into any space while delivering Casio’s unique piano sounds. As the world's slimmest* digital piano and housing Casio's various proprietary technologies, the Privia PX-S1100 and PX-S3100 represent the latest evolution in grand piano sound and touch with an enhanced speaker system.
* Based on the depth of an 88-key digital piano with hammer action and built-in speakers (as of July 2021, according to research by Casio).

The World's Slimmest* Digital Piano, Perfect for Any Room
The keyboard mechanism, speakers and other components have been miniaturized as far as possible while still delivering the highest performance. Crucial to the keyboard's small size is Casio's proprietary high-density technology, featuring a space-saving internal structure with the circuit board mounted vertically. These innovations and others have made possible the world's slimmest* digital piano in terms of depth – allowing for extremely flexible placement.
* Based on the depth of an 88-key digital piano with hammer action and built-in speakers (as of July 2021, according to research by Casio).

With the world's shallowest depth* and a height of only 102 mm, this piano is a perfect fit for any space.

The Full Sound and Rich Resonance of a Grand Piano

[Multi-dimensional Morphing AiR Sound Source]

Harmonically Rich and Vivid Sound The Distinctive Sound of a Grand Piano
[Acoustic Simulator]
The harmonically rich sound of an acoustic grand piano is produced by a combination of the complex mechanism within the instrument's large body and the changes in overtone structure from the approximately 230 strings that resonate according to the player’s articulation, musical phrasing and use of the pedals. Casio's proprietary Multi-dimensional Morphing AiR Sound Source produces the natural, full-bodied sound of a grand piano with incredible detail.

The PX-S1100 and PX-S3100 deliver a vivid, harmonically rich sound thanks to the dense overtones of each individual string for all 88 keys tuned for its unique speaker system. Sympathetic resonances can be heard when the damper pedal is pressed and the other strings are free to resonate (damper resonance). Damper noise (the sound of the damper leaving the strings) and key action noise (the mechanical sound unique to grand pianos made when keys are pressed softly or when keys are released) are also audible. Touches like these are the secret to the grand piano experience.

Changes in Timbre Based on the Nuances of the Player
[Multi-dimensional Morphing Technology]
The timbre of a note played on an acoustic grand piano changes expressively depending on how the key is played and over time as the note continues to ring. Casio's unique Multi-dimensional Morphing Technology produces smooth volume and timbre changes according to key velocity and time (temporal change), allowing players to express the full range of playing styles from gentle pianississimo to powerful fortississimo.

Multi-dimensional Morphing Technology

Sound Generation Technology that Maximizes the Expressive Power of an Acoustic Grand Piano
[Lossless Audio Compression]
Most digital pianos use ‘lossy’ compressed audio waveform data for their piano sounds. When a key is pressed, the appropriate waveform data is decompressed and played back. Because the compression is ‘lossy’, however, the sound – like MP3 files – is inevitably degraded in comparison to the original. AiR Sound Source, on the other hand, uses lossless audio compression (reversible compression and decompression), which not only preserves the original sound but also allows for playback of many compressed waveform variations. The result is a beautifully expressive piano that can be played as you would an acoustic grand.

High-Quality Sound in a Compact Body for Optimal Performance – Advanced Sound System

A Sound System with Outstanding Resolution and Localization for Even More Expressive Playing
The speaker diaphragm has been made as large as possible within the confines of the space available to achieve a powerful sound. Mica, a reinforcing material used in many high-end audio products, is incorporated into the diaphragm of the Privia PX-S1100 and PX-S3100 speakers to produce high frequencies with greater detail. In addition, the internal structure of the speakers allows for a wide range of voice coil movement for increased sound capacity, while producing richer and more resonant low frequency sounds. In short, every nuance the player expresses is faithfully reflected in the sound.

Mica, a reinforcing material, is incorporated into the speaker diaphragm to improve the resolution of high-frequency sounds.

An internal structure that expands the range of the voice coil movement produces richer and more resonant low frequency sounds.

With Even Greater Expressive Power, All the Performance Characteristics of a Grand Piano
With improved expression of the low and high frequency ranges, the resultant sound is well-balanced with an excellent sense of presence and localization. Capture the joyful feel of a grand piano.

The finely balanced sound and precise localization of a grand piano

Miniaturized Keyboard Mechanism with a Naturally Expressive Touch

Compact Yet a Pleasure to Play
[Smart Scaling Hammer Action Keyboard]
The action mechanism, with hammer weighting the same as a grand piano, has been greatly reduced in size. Despite a slim body depth of just 232 mm, the Privia PX-S1100 and PX-S3100 have the natural touch of a grand piano.

Play with the Feel of a Grand Piano
[88-Key Digital Scaling and Hammer Response]
The 88 keys of an acoustic grand piano have different hammer sizes and weights—giving each key a different touch. Casio’s 88-key Digital Scaling technology digitally controls the sound level generated by each keypress. The sound timing, which varies subtly with the sound range, is adjusted by the Hammer Response function according to how the keys are played, which further enhances the grand piano experience.

Enhanced Expressiveness When Playing Repeated Notes
[Key Off Response]
The note-off timing is digitally controlled based on the key’s movement when released. When playing repeated notes, each note is voiced distinctly even when the key does not fully return to its original position. This allows for detailed touch expression, controlling how a note starts to ring and how it is damped, as you would expect from a grand piano.

Piano Keys That Feel Right to the Touch
[The Fine Texture of Ebony and Ivory]
The keys have a quality feel and are smooth to the touch. The fine-grained finish on the key surface prevents slippage caused by perspiration, and the keys feel comfortable to the fingertips even during long sessions.

Ebony and Ivory Texture

A Compact Action Mechanism with a Natural Piano Touch

The reduced size of the action mechanism has allowed Casio to create the world's lowest profile digital piano. The hammers and other components essential for the creation of sound have been reduced in size to the absolute minimum to achieve a slim body that maintains a natural piano touch.

A High Level of Performance Realized Through a Space-Saving Hammer Action Mechanism
Casio has developed a unique yet compact hammer action mechanism that optimizes the hammer weight, center of gravity and moment of inertia to achieve a balance between the gentle response when the key is played softly and the dynamic response when the key is played forcefully.

A Proprietary Hammer Holder Mechanism for More Accurate Key Touch
The hammer holder mechanism is designed to prevent excess vibration and ensure stable upward and downward movement of the hammer, offering a stable and precise touch.