CASIO PX-870 Digital Piano

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  • CASIO PX-870 Digital Piano black. EMI Audio
  • CASIO PX-870 Digital Piano black. EMI Audio
  • CASIO PX-870 Digital Piano walnut. EMI Audio
  • CASIO PX-870 Digital Piano white. EMI Audio

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CASIO PX-870 Digital Piano. Available in Black (079767362362 PX870BK), Walnut (079767362423 PX870BN) and White (079767362379 PX870WE). Unprecedented Natural Reproduction of the Rich Expressive Power and Resonance of an Acoustic Piano. The characteristics of CASIO’s newly developed Multi-dimensional Morphing AiR* Sound Source reflect thorough attention to detail in expressing the rich, resonating tones inherent to the piano. The capacity of the installed memory has been expanded to achieve a longer sampling duration and enhanced waveform data quality. The temporal changes in tone that create sound you would expect only from a piano, beginning with the initial sound and leading into a beautiful extension until the sound eventually vanishes, are reproduced naturally.




88-key, Tri-sensor Scaled Hammer Action Keyboard II, Simulated ebony and ivory keys

Touch Response

3 sensitivity levels, Off

Sound Source

AiR Sound Source
Damper Resonance, Hammer Response, Damper Noise

Maximum Polyphony



19 built-in tones: Grand Piano (Concert, Mellow, Bright), Modern Piano, Rock Piano, Jazz Piano, Elec Piano 1, Elec Piano 2, FM E. Piano, 60`s E. Piano, Harpsichord, Vibraphone, Strings 1, Strings 2, Pipe Organ, Jazz Organ, Elec Organ 1, Elec Organ 2, BASS (LOWER)


Layer (Excluding bass tones), Split (Low-range bass tones only)

Digital Effects

Reverb (4 types), Chorus (4 types), Brilliance(-3 to 0 to 3), DSP (Preset for some tones)

Built-in Songs

10 (Concert Play), 60 (Music Library) songs

Song Expansion

10 songs (max.) Up to approximately 90 KB/song

Lesson Function

Part ON/OFF (Lesson part: Right hand/Left hand)


Beats: 0 to 9 (Tempo range: quarter note = 20 to 255)

MIDI Recorder

2 tracks x 1 song, approximately 5,000 notes maximum, real-time recording/playback

Other Functions

  • Connection to App
  • GRAND PIANO button, ELEC PIANO 1 button
  • Duet Mode
  • Slide-type keyboard cover
  • Auto Power Off: Off after approx. 4 idle hours (default setting)
  • Octave shift: ±2 octaves

Key Transpose

2 octaves (-12 semitones ~ 0 ~ +12 semitones)

Tuning Control

A4 = 415.5 Hz ~ 440.0 Hz ~ 465.9 Hz


3 pedals (damper, soft, sostenuto)


This product is not equipped with MIDI terminals. MIDI communication between the product and a computer is performed using the USB port.


12cm x 2

Amp Output

8W + 8W

Input/Output Terminals

  • PHONES/OUTPUT x 2 (Stereo standard)
  • USB: type B
  • External power (12V DC)

* USB cable (A-B type) required to use USB terminal for computer connection.

Power Requirements

AC Adaptor: AD-A12150LW

Dimensions (W x D x H)

1,391 x 299 x 798 mm
(w/o music stand)


31.5kg (w/o music stand)

Body Color/Finish

PX-770BK: Black wood tone finish
PX-770WE: White wood tone finish
PX-770BN: Oak tone finish

Included Accessories

AC Adaptor (AD-A12150LW), Music Stand

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Additional Information

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