Casio Celviano GP-300 Grand Hybrid (Casio GP300BK), console digital piano, digital upright, digital home piano, keyboard console

Casio Celviano GP-300 Grand Hybrid

Model: GP300BK

Stock Status: IN STOCK!

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Our pianos and our prices will make you smile. . . but you'll need to visit our showroom first. Price quotes (on new pianos) cannot be provided by email or over the phone as this is a policy of the quality manufacturers we represent.

Casio's newest Celviano models carry the label, Grand Hybrid.  What is a Grand Hybrid?  Casio deserves recognition for many of the performance advancements found in these newest models, but most importantly, Casio has brought the action out of a grand piano and into a digital piano.  Secondly, they raised the level of detailed piano sound to match this essential grand piano feel.

Casio's new Celviano Grand Hybrid, model GP-300, reproduces the finest nuances of the grand piano experience, both in sound and feel. Casio collaborated with elite piano maker, C.Bechstein, to create this new instrument.  The Natural Grand Hammer Action is a real wooden piano keyboard, real piano keytops, all connected to a piano action that replicates the weight, workings and geometry of a grand piano.  The nuances of a grand piano's touch, the responsiveness, the repetition, the feedback - it is all real.

Casio's newest piano sound engine is the AiR Grand Sound Source.  The AiR Grand Sound Source recreates 3 legendary concert grand pianos, the Berlin Grand, the Hamburg Grand & the Vienna Grand.  The Berlin Grand, produced in collaboration with C.Bechstein, faithfully recreates the sound and nuances of the C.Bechstein D282 concert grand piano.  The same processes were then applied to create the Hamburg & Vienna concert grand pianos.

Casio has painstakingly researched and analysed the unique characteristics of the world’s finest grands to provide the experience of owning three of the finest. Features such as Natural Grand Hammer Action, 3 distinct concert grand piano sounds (from 26 total tones), a Hall Simulator that recreates the acoustics of numerous world-class performance venues leave nothing to be desired for ambitious piano playing.

Number of keys

  • 88
  • Yes/Yes 
  • Adjustable tone range (-2 to + 2 octaves) 
  • 2 octaves (-12 to 0 to +12) 
Octave shift
  • 4 octaves (-2 to 0 to +2)

Sound source

Number of tones
  • 26 
Maximum polyphony
  • 256 
Touch response
  • 5 sensitivity levels, off 
  • 415,5 Hz to 440,0 HZ to 465,9 Hz 
  • Equal temperaments plus 16 other types 
Stretch tuning 
  • 5 types
  • off
  • auto setting 

Acoustic Simulator
Damper resonance
  • Yes 
Damper noise
  • Yes 
Hammer response
  • Yes 
String resonance
  • Yes
Lid simulator
  • Yes


  • Brilliance: Yes (-3 to 0 to 3)
  • Hall simulator: 12 types
  • Chorus: 4 types
  • DSP: Yes
  • Headphone mode: Yes
  • Volume Sync Equalizer: 3 types, off 

Concert Play
Number of songs

  • 15 

Song volume

  • Adjustable 


  • 2

Music Library

Number of songs

  • 60 

User songs

  • 10 (up to approximately 90 KB per song)
Song volume
  • Adjustable 
Part On/Off
  • L/R 
Grand Piano demo song
Number of songs
  • 6

MIDI Recorder
  • Real-time recording
  • playback 
Number of songs
Number of tracks
  • Approximately 5000 notes total 
Recorded data protection
  • Built-in flash memory

Volume level

  • Adjustable

Audio Recorder


  • Real-time recording 
  • playback 

Number of songs

  • Max. 99 songs
  • approximately 25 min./song (to USB flash drive, 44.1 kHz WAV format) 

Volume level

  • Adjustable 


  • 0 to 9 

Tempo range

  • 20 to 255 

Metronome volume level

  • Adjustable 


  • Damper: Yes, with half pedal-operation 
  • Soft: Yes 
  • Sostenuto: Yes


  • 16-channel multi-timbre receive 

USB Flash Drive

  • 32 GB 

Other functions

  • Setting backup
  • operation lock Display LCD with backlight


  • Phones: Stereo standard jacks x 2
  • LINE IN: (R, L/MONO) standard jacks x 2
  • LINE OUT: (R, L/MONO) standard jacks x 2
  • MIDI: In/Out
  • USB port: Type B
  • USB flash drive port: Type A
  • Pedal connector: Yes

  • Size: 16 cm x 2 + (10 cm + 5 cm) x 2
  • Amp output: 30 W x 2 + 20 W x 2 
Volume Sync Equalizer
  • 3 types
  • off 

W x D x H
  • 143,4 x 48,9 x 96,3 cm 
  • 77,5 kg 

  • AC adaptor
  • score book
  • music stand

*Specifications are subject to change w/o notice.