Casio has today released news of two new models – the GP-310 and the GP-510. These two instruments form part of Casio’s premium Celviano Grand Hybrid product range. They are both uprated versions of the popular GP-300 and GP-500.

Casio Celviano GP310BK (black) Grand Hybrid
Casio cite the main improvements as:
- A more precise touch response, especially when playing pianissimo
- A richer bass sound
- New piano tones with improved clarity and tonal projection
- Enhanced soft pedalling.
The new models provide more dynamic contrast throughout the tonal
The Celviano Grand Hybrid range was originally introduced in 2015, with the aforementioned GP-300 and GP-500 (and subsequently the GP-400). At the heart of these digital instruments is the AiR Grand Sound Source (Acoustic and Intelligent Resonator).
This technology is used to reproduce the subtle nuances of three core pianos: the Berlin Grand – with a clear bell-like timbre across its entire compass; the Hamburg Grand – a brighter richer more expressive sound; and the Vienna Grand – warmer with a powerful lower register.
The C. Bechstein Celviano Connection
I’m sure you can work out where Casio is coming from with the names of these voicings! Actually, C. Bechstein was responsible for creating the Berlin Grand sound. And the company also helped in the design of the keyboard — the full-length keys are made from the same Austrian spruce as used for the C. Bechstein concert grands. As a result, every Casio Celviano Grand Hybrid features a plaque recognising C. Bechstein’s involvement.

The GP-510 is the higher spec’d model. It includes extra features such as:
- A greater number of preset tones
- Enhanced performance set-ups
- Aliquot resonance
- Open string resonance
- Pedal action noise.
A detailed spec sheet for both the GP-310 and the GP-500 appears below.
“We are incredibly proud of achieving yet another innovation milestone with the release of the latest Celviano Grand Hybrid piano models. This opens up a world of opportunity and new experiences for those seeking the grand sound of a classical instrument combined with the best and latest in technology.”
Neil Evans, Head of Casio Music UK
More information can be found on the various Casio international websites (Casio US, Casio UK, Casio Europe).
The new Casio Celviano Grand Hybrid models (GP-510 and GP-310) are released at the end of September 2019 (UK). They have a recommended retail price (RRP) of £3,895.00 and £2,735.00 respectively.
Prices and availability for other territories are not yet available. Please check back here later.
CASIO GP-31- and CASIO GP-510 Specifications
CASIO GP-310 | CASIO GP-510 | |
---|---|---|
KEYBOARD | ||
Number of Keys | 88 | 88 |
Number of sensors | 3 | 3 |
Action | Natural Grand Hammer Action Keyboard | Natural Grand Hammer Action Keyboard |
Key surface finish | White Keys : Acrylic Black Keys : Phenol | White Keys : Acrylic Black Keys : Phenol |
Touch Sensitivity | 5 sensitivity levels (Heavy 2, Heavy 1, Normal, Light 1, Light 2), off | 5 sensitivity levels (Heavy 2, Heavy 1, Normal, Light 1, Light 2), off |
Hammer Response | 10 levels, off | 10 levels, off |
SOUND ENGINE | AiR Grand Sound Source | AiR Grand Sound Source |
Pianos | Berlin Grand, Hamburg Grand, Vienna Grand | Berlin Grand, Hamburg Grand, Vienna Grand |
Polyphony (maximum) | 256 | 256 |
Acoustic Simulator… | ||
Damper Resonance | 10 levels, off | 10 levels, off |
String Resonance | 10 levels, off | 10 levels, off |
Aliquot Resonance | - | 10 levels, off |
Open String Resonance | - | 10 levels, off |
Damper Noise | 10 levels, off | 10 levels, off |
Pedal Action Noise | - | 10 levels, off |
Key On Action Noise | 10 levels, off | 10 levels, off |
Key Off Action Noise | 10 levels, off | 10 levels, off |
Key Off Simulator | Yes | Yes |
Lid Simulator | 4 types | 4 types |
TONES | ||
Number of Built-in Tones | 26 | 35 |
Piano Tone | 12 | 16 |
Direct Tone Select button | 3 | 3 |
Layer | Yes | Yes |
Split | Yes | Yes |
DIGITAL EFFECTS | ||
Hall Simulator/Reverb | 12 types x 4 positions (Hall Simulator) | 12 types x 4 positions (Hall Simulator) |
Chorus | 4 types | 4 types |
Brilliance | 7 levels (-3~0~3) | 7 levels (-3~0~3) |
DSP | Yes (Preset for some tones) | Yes (Preset for some tones) |
SOUND SYSTEM | ||
Grand Acoustic System | Yes | Yes |
Top Board Open/Closed | Yes | Yes |
Volume Sync EQ | 3 levels, off | 3 levels, off |
Headphone Mode | Yes | Yes |
Speakers | 16 cm x 2 + (10 cm + 5 cm) x 2 | 16 cm x 2 + (10 cm + 5 cm) x 2 |
3-way, 6-speakers | 3-way, 6-speakers | |
Amplifier | 30W x 2 + 20W x 2 | 30W x 2 + 20W x 2 |
PEDALS | ||
Pedal compliment | 3 built-in pedals (damper, soft, sostenuto) | 3 built-in pedals (damper, soft, sostenuto) |
Half Damper Pedal Efect(Damper) | Yes (continuous recognition) | Yes (continuous recognition) |
Half Pedal Position(Damper) | 5 levels (-2~0~2) | 5 levels (-2~0~2) |
SONGS | ||
Concert Play… | ||
Number of Preset Songs | 15 | 15 |
Controller | FF, REW, PAUSE, REPEAT, TEMPO DOWN | FF, REW, PAUSE, REPEAT, TEMPO DOWN |
Playback Mode | 2 (LISTEN, PLAY) | 2 (LISTEN, PLAY) |
Music Library… | ||
Number of Songs | 60 | 60 |
User Area | 10 | 10 |
Approximate Data Capacity | Approx. 900KB (Up to approx. 90KB/song) | Approx. 900KB (Up to approx. 90KB/song) |
Controller | FF, REW, PAUSE, REPEAT, TEMPO CHANGE | FF, REW, PAUSE, REPEAT, TEMPO CHANGE |
Lesson Function | Right hand off, Left hand off | Right hand off, Left hand off |
Grand Piano Tone Demo | 6 | 6 |
FUNCTIONS | ||
Performance Setups… | ||
Preset | - | 15 |
User Area | - | 10 |
Duet Function | Yes | Yes |
Duet Pan On/Off | Yes | Yes |
Recorder | 1 song, 2 tracks | 1 song, 2 tracks |
Approximate Data Capacity | Real Time Rec, up to 5,000 notes | Real Time Rec, up to 5,000 notes |
Controller | FF, REW, PAUSE, REPEAT, TEMPO CHANGE | FF, REW, PAUSE, REPEAT, TEMPO CHANGE |
Audio Record/Play | Max. 99 songs maximum, approximately 25 min./song (To USB flash drive, 44.1 kHz Stereo WAV format) | Max. 99 songs maximum, approximately 25 min./song (To USB flash drive, 44.1 kHz Stereo WAV format) |
Controller | FF, REW, PAUSE, REPEAT | FF, REW, PAUSE, REPEAT |
Metronome… | ||
Beats | 0~9 | 0~9 |
Tempo | 20~255BPM | 20~255BPM |
Octave Shift | Yes | Yes |
Key transpose | 2 octaves (-12 semitones ~ 0 ~ +12 semitones) | 2 octaves (-12 semitones ~ 0 ~ +12 semitones) |
Tuning control | A4 = 415.5Hz ~ 440.0Hz ~ 465.9Hz | A4 = 415.5Hz ~ 440.0Hz ~ 465.9Hz |
Number of Preset Temperaments | Equal temperaments plus 16 others | Equal temperaments plus 16 others |
Operation Lock | Yes | Yes |
DISPLAY | ||
Type | Full-dot LCD with backlight | Full-dot LCD with backlight |
CONNECTIVITY | ||
Headphone | 2 (Stereo standard jack) | 2 (Stereo standard jack) |
Line OUT | 2 (L / MONO, R), Standard jack | 2 (L / MONO, R), Standard jack |
Line IN | 2 (L / MONO, R), Standard jack | 2 (L / MONO, R), Standard jack |
MIDI | IN/OUT | IN/OUT |
USB To Host | Yes | Yes |
USB To Device | Yes | Yes |
POWER | ||
Power Consumption | 38 W | 38 W |
Power Supply | DC 24V | DC 24V |
AC Adaptor | AC Adapter : AD-E24500LW | AC Adapter : AD-E24500LW |
Auto Power Off | Yes | Yes |
DIMENSIONS | ||
Size | 1,434 x 489 x 963 mm (w/o music stand) | 1,434 x 489 x 963 mm (w/o music stand) |
56.4 x 19.2 x 37.9 inch (w/o music stand) | 56.4 x 19.2 x 37.9 inch (w/o music stand) | |
Weight | 78.5kg (173.1 lb.) | 78.5kg (173.1 lb.) |
Color / Finish | BK: Satin Black WE: Natural White Wood | Polished Black |
ACCESSORIES | ||
Adjustable-height Piano Bench | Yes (except Europe ver. and UK ver.) | Yes (except Europe ver. and UK ver.) |
Music Stand | Yes | Yes |
Score Book (Concert Play/Music Library) | Yes | Yes |
AC Adaptor | Yes (AD-E24500LW) | Yes (AD-E24500LW) |
Headphone Hook | Yes | Yes |