Casio AP650M



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Sound Technology

Unprecedented Natural Reproduction of the Rich Expressive Power and Resonance of an Acoustic Piano

Multi-dimensional Morphing AiR Sound Source

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. learn more

  • * AiR = Acoustic and Intelligent Resonator

Keyboard System

Natural Playing Feel Approaching That of a Grand Piano Firm Touch That Converts the Player’s Thoughts into Sound

Tri-sensor Scaled Hammer Action Keyboard II, with a grand piano’s unique sounding timing

The difference between the sound structures of a grand piano and a digital piano appears as a difference in timing, from the moment the instrument is played until the sound is audible. The new Tri-sensor Scaled Hammer Action Keyboard II responds by incorporating a system with three sensors that detect touches of the keys sequentially. learn more

Simulated ebony and ivory keys with optimal fingertip fit for playing ease

The Simulated ebony and ivory keys offers the luxurious feel and texture as well as the smooth touch of a grand piano keyboard. The minutely detailed crimp surface finish inhibits finger slippage due to sweat and gives the sensation of a perfect fingertip fit, even when playing for extended periods.

Lid Simulator* reproducing the sound effects resulting from an open lid

The sound volume and quality change when the lid on a grand piano is raised or lowered. The Lid Simulator reproduces the same acoustic effects for enhanced enjoyment with a digital piano. The acoustic effects of opening and closing the lid are simulated in fine detail. The piano sound you are seeking as you play is always available for your enjoyment by selecting the degree to which the lid is raised or lowered.

  • * The Lid Simulator setting value remains unchanged, regardless of whether the lid on the piano body is open or closed.

An unprecedented evolution of the digital piano

String Resonance* resonator achieving deep, rich resonance with 88 keys

The sound produced by an acoustic piano is not only the sound associated with the keys that are struck. Other strings with frequencies closely associated with those producing the sounds resonate as well, adding their sound to give the music a uniquely rich resonance. In ordinary digital pianos, this string resonance effect is reproduced virtually with strings. The Multi-dimensional Morphing AiR sound source takes a different approach, however, by adopting a “string resonance” system incorporating a stereo resonance simulator for all 88 keys. The resonance of the 88 keys is reproduced completely and naturally. The resonance realized by playing a single tone is differentiated from that realized by playing a chord to reproduce the resulting variations in resonance in a natural manner. This even enables players to achieve varying resonances, controlling them at will by the strength of their touch, and thus to realize performances with the unique expressiveness of an acoustic piano.

Key Off Simulator reproducing tonal variations resulting from finger release

The lengths of the reverberations and expressions a piano produces vary depending on the speed at which players release their fingers after touching the keys. The new keyboard system incorporates a Key Off Simulator that reproduces these nuances resulting from key release naturally. Authentic reverberations that feel just like those of a grand piano are expressed as a result.

Damper Resonance*1 achieving a more naturally beautiful resonance than a pedal

The deep, beautiful resonance resulting from the use of a damper pedal is also reproduced naturally by a stereo resonance simulator installed on all 88 keys, an approach that differs from conventional simulated reproduction employing effect processing. The attention to detail goes so far as to simulate the resonance created by the lifting of the dampers themselves when the pedal is pressed.   A continuously variable system has been adopted for the damper pedal, moreover, reproducing even the subtle changes in reverberation that occur in response to the delicate pressure exerted by partial pedal operation. This enables players to employ pedal operation to achieve gracefully expressive performances.

  • *1 4 adjustment levels.

Versatile features

Audio Recording (44.1 kHz WAV Format / up to approximately 25 min. per song)

250 pro-quality tones including stereo-sampled grand piano tones

180 rhythms including ethnic rhythms and patterns for piano play

Rhythm Editor (10 user rhythms)

Registration (96 setups)

Music Preset feature including chord progressions for one-touch access to setups for a wide range of music styles (300 presets and 50 user areas)

Digital effects: reverb (4 types), chorus (4 types), brilliance, DSP (preset for some tones)

Lesson feature using 60 Music Library songs plus 10 user loaded songs

Multi-track Recorder: 17 tracks x 5 songs, approximately 10,000 notes per song

Duet Mode enabling two people to play in the same range

Tone Select buttons for instant access

USB flash drive port

Adjustable-height piano bench included

LINE IN/OUT jacks(L/MONO, R for each)




Keyboard Number of keys 88-key piano keyboard
Touch Response 3 types
Tones Number of tones 250 (with Split and Layer)
Polyphony (maximum) 256 notes
Effects Types Hall 4 types
Chorus 4 types
Brilliance (-3 to 0 to 3)
Damper Resonance Yes
Hammer Response Yes
String Resonance Yes
Lid Simulator Yes
Key Off Simulator Yes
Metronome Beats per measure 0,2,3,4,5,6
Tempo range 20 to 255
Duet Adjustable tone range Left keyboard: 0 – 3 octaves / Right keyboard: -4 – -1 octaves
Auto Accompaniment Built-in Rhythms 180
User Rhythms up to 10 (approximately 40 KB per rhythm)
One Touch Presets 180 types
Auto Harmonize 12 types
Demo Songs Number of songs 6 songs (tone demo songs)
Music Library Number of songs 60
User Songs up to 10 (320 KB maximum per song)
Music Presets Built-in Presets 300
User Presets up to 50 (approximately 8 KB maximum per preset)
Registration 96 (4 setups x 24 banks)
Song Recorder Functions Real-time recording Yes
Playback Yes
Number of songs 5
Number of tracks 17 (System Track + Tracks  01 through 16)
Capacity approximately 50.000 notes total
Punch-in recording Yes
Audio Recorder Functions Real-time recording Yes
Playback Yes
Number of songs 99, approximately 25 minutes maximum recording per file
Pedal Damper (with half-pedal operation) Yes
Soft Yes
Sostenuto Yes
Other functions Transpose ± 1 Ooctave (-12 to 00 to 12)
Tuning A4 = 415,5 Hz to 440,0 Hz to 465,9 Hz
Octave shift ± 2 octaves
Temperaments 17 types
Stretch Tune Yes
Panel lock Yes
MIDI 16-fach multitimbral received, GM level 1 standard
USB-Flash-Drive SMF playback Yes
Data storage Yes
Data loading Yes
USB flash drive format Yes
Playback of audio data Yes
MIDI 16 multi-timbre received, GM Level 1 standard
Inputs/Outputs Types PHONES Stereo standard jacks x 2
LINE IN Standard jacks x 2
LINE OUT Standard jacks x 2
USB port Type B
USB flash drive port Type A
Pedal connector Yes
Speaker Measurements ø 16 cm x 2 + ø 5 cm x 2
Output 30 W + 30 W
Power Requirements AC adaptor AD-E24500LW
Auto power off approximately 4 hours after last operation, can be disabled
Power Consumption 24 V – 28 W
Size Dimensions (W x D x H) 137,7 (W) x 42,7 (D) x 91,1 (H) cm
Weight approximately 50,2 kg

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