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Comparison Casio Celviano AP-270 vs Casio Privia PX-770

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Casio Celviano AP-270
Casio Privia PX-770
Casio Celviano AP-270Casio Privia PX-770
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Bodystationarystationary
Cover
Built-in pedals
Keys
Number of keys88 шт88 шт
Sizefull sizefull size
Mechanicsmalleusmalleus
Sensitivity adjustment
Rigidityweightedweighted
Specs
Polyphony192 voices128 voices
Built-in timbres22 шт19 шт
Learning mode
Tempo change20 – 25520 – 255
Metronome
Sequencer (recording)
Built-in compositions
 /60 pcs/
Effects and control
Timbres layering
Keyboard split
Octave shift
Reverberation
 /4/
 /4/
Chorus
 /4/
 /4/
Brightness
 /-3 – 3/
 /-3 – 3/
Transposition
Fine tuning
 /415.5 – 465.9 Hz/
 /415.5 – 465.9 Hz/
Connectors
Outputs
USB to host (type B)
USB to host (type B)
Headphone outputs2 шт2 шт
General
Built-in acoustics16 W16 W
Number of bands22
Power consumption18 W18 W
Dimensions (WxHxD)1417x821x432 mm1391x798x299 mm
Weight36.6 kg31.5 kg
In box
music stand
PSU
music stand
PSU
Color
Added to E-Catalognovember 2017november 2017

Sensitivity adjustment

The ability to adjust the sensitivity of the digital piano keyboard.

The sensitivity level determines the volume and sharpness of the sound that the instrument will produce at a certain force and speed of pressing the key. High sensitivity allows you to achieve sharp, expressive sound with significant volume differences, low — relatively quiet, soft and smoothed. And some instruments even provide "zero" sensitivity — when all keys sound with the same volume and dynamics, regardless of the pressing force. This can be useful, for example, to imitate the sound of certain instruments (such as the harpsichord).

Polyphony

The number of voices supported by the digital piano — more precisely, the maximum number of voices that the instrument can play at the same time.

This parameter should not be confused with the number of notes that can be played simultaneously on the keyboard. The fact is that in many timbres, several voices (tone generators) are used for each note at once — this is the only way to achieve a more or less reliable sound. Thus, the required number of voices can be many times higher than the number of notes — for example, the simplest chord of 3 notes may require 9 or even 12 voices. In addition, tone generators are used to play auto accompaniment parts and built-in songs (see below), and here the number of voices can already be measured in tens.

In light of all this, polyphony of less than 90 voices is typical mainly for relatively simple and inexpensive instruments that are not designed for complex tasks. The smallest number found in modern digital pianos is 32 voices. It is desirable for a more or less solid instrument to have at least 96 voices, and in top models this figure can reach 256.

Built-in timbres

The number of built-in sounds provided by the Digital Piano.

Despite the name, digital pianos are extremely rarely designed to imitate the sound of only a piano — the electronic hardware allows them to provide other timbres of sound. In addition, even the piano has its own varieties — for example, among the grand pianos there are 6 main classes, from large concert to miniature. So the built-in sounds can cover different kinds of pianos, as well as other instruments and sound effects.

The abundance and variety of timbres in digital pianos as a whole is not as great as in synthesizers, however, in this category there are very “charged” models, with a hundred timbres or more (in the most multifunctional, this number can exceed 900). However, it is worth specifically looking for a “multi-instrumental” model if you do not intend to be limited to the sound of the piano and would like to have more freedom of choice. It is worth remembering that a specific set of timbres can be different.

If the instrument is bought exclusively as a piano, then here, on the contrary, it is worth paying attention primarily to solutions with a small number of timbres. Such models are not only cheaper than "universals" — they can also sound better (due to the fact that there are few timbres and the manufacturer can carefully approach the sound quality of each built-in "instrument").
Casio Celviano AP-270 often compared
Casio Privia PX-770 often compared