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
String Resonance, Damper Resonance, Damper Noise, Hammer Response, Lid Simulator, Key Off Simulator, Key Action 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
Hall Simulator (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)
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
[Audio recording] Max. 99 songs approximately 25 min/song (44.1kHz WAV Format)
Other Functions
  • Sound Projection
  • Headphone Mode
  • Volume Sync EQ
  • Connection to App
  • GRAND PIANO button, ELEC PIANO 1 button
  • Slide-type keyboard cover
  • Auto Power Off: Off after approx. 4 idle hours (default setting)
  • Duet Mode
  • 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)
* damper = seamless operation
This product is not equipped with MIDI terminals. MIDI communication between the product and a computer is performed using the USB port.
12 cm x 2, 4 cm x 2 (2-Way, 4-Speaker)
Amp Output
20W + 20W
Input/Output Terminals
  • PHONES/OUTPUT x 2 (Stereo standard)
  • USB: type A, type B
  • External power (24V DC)

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

Power Requirements
AC adaptor: AD-E24250LW
Dimensions (W x D x H)
1,393 x 299 x 801 mm
(w/o music stand)
34.3 kg (w/o music stand)
Body Color/Finish
PX-870BK : Black wood tone finish
PX-870WE : White wood tone finish
PX-870BN : Oak tone finish
Included Accessories
AC Adaptor (AD-E24250LW), Music Stand
EAN code
PX-870BK : 4971850362364
PX-870WE : 4971850362371
PX-870BN : 4971850362425


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