Ctk 4000

Ctk 4000 DEFAULT

On paper, the Casio CTK-4000 seems like a nice low-end keyboard, but many buyers give it a thumbs down.

This affordable keyboard has 61 standard-size keys and two touch sensitivity levels for a more piano-like experience, along with 48-note polyphony (24-note for certain tones).

With 570 onboard tones, plus rhythms, reverb, and chorus digital effects to add depth to the performance, there is plenty of room for exploration and creativity in your playing with digital Keyboard

Using the Auto Accompaniment feature, you can play a chord with your left hand and the selected accompaniment pattern will play automatically. Similarly, the Auto Harmonize feature automatically adds harmony to the melody notes you play with your right hand.

For novices, the CTK-4000 features a 3-step lesson system and built-in songs to helps you master keyboard play.

You can also connect the CTK-4000 to a computer using a USB cable and exchange MIDI data between the two devices.

However, despite all the features, many buyers don’t seem happy with the quality of this keyboard. That’s why you may want to think twice before opening your wallet.

You might be interested in CTK Series Digital Piano

Here are some of the features of the Casio CTK-4000 Personal Keyboard, 61-Key, with MP3 Connection, 10 Second Sampling, and Digital Effects:

  • – 61 piano-style keys
  • – Touch response (2 sensitivity levels, off)
  • – 48-note polyphony (maximum)
  • – 570 high-quality tones including stereo grand piano tones
  • – 180 rhythms including 74 ethnic rhythms and 20 patterns for piano play

Check Price on Amazon

Here is what current owners have to say about the Casio CTK-4000 Personal Keyboard:

Duke: “If you want to bang keys for a few days and then put this into the corner of your darkest closet this keyboard is probably fine. But, if you were planning on using this as a tool to learn to play a keyboard I would advise against it. After less than 4 months (Less than 40 hours total use) the keys are all starting to squeak and bend oddly. If you’re like me (and want something that is at least reliable and feels right even though you aren’t a pro) I’d advise spending a bit more to get something that isn’t so flimsy.”

Sours: https://piano-reviews.com/casio-ctk-4000/

Casio CTK4000 Keyboard

Welcome to the Musician Olympics

Follow in the footsteps of legendary rock and pop stars with the CTK-4000! Over 300 music presets offer useful presetting from A to Z for parameters such as rhythm, tone, tempo, effects etc. Less searching, more playing! And the result can be recorded straight away with the sequencer (6 tracks/5 songs). Encore? No problem with the CTK-4000 sampling function: via the audio input, noises, voices, loops, drum sounds etc. can be recorded directly and played with the keyboard. For example, you can set the keyboard to shout "Hip Hip Hurray" to the player for 10 seconds. The wide range of additional extras offered by the CTK-4000 also deserve applause: arpeggiator, scale tuning, registration memory, octave shift, rhythm editor and much more.

570 AHL tones

570 AHL tonesThe high-quality 570 AHL tones create clear and dynamic sounds, which unfold in all sounds and rhythms found in classical piano pieces, as well as many other genres.

48-note polyphony

48-note polyphonySound diversity at its best: the CTK-4000 can play up to 48 voices at the same time, turning interpretation of a wide range of musical pieces into a pure pleasure.

61 dynamic touch keys

61 keysThe 61 'piano look' keys give the keyboard a sophisticated, elegant appearance and provide the ideal scope for musical inspiration.

Step-up learning system

Step-up learning system The improved step-up learning system from CASIO is based on the principal "learning by playing": as in traditional piano lessons, the practice piece is split up into individual bar sections and learnt step-by-step. The small learning units guarantee motivation and learning success.

» Step 1: Listen
» Step 2: See and repeat with visual support
» Step 3: Remember and play without help

When the "Auto" mode is switched on, a set practice goal must be reached before the next bar section is displayed. With the "Next" mode you can set your own learning speed.

180 rhythms

180 rhythms180 rhythms provide you with a colourful overview of the world of music.

Registration memory

Registration memoryQuick access: you can store up to 32 setups (8 benches with 4 memory spaces each) in the registration memory.

Sampling function

Sampling functionA feature with fun factor: the simple sampling of sounds via an external sound source such as MP3 and CD players (via Audio-in) or microphone (via Mic-in) offers interesting effects and amusing compositions. Whether a bar of your favourite musical piece, loops or drum sounds, human voices or noises of any kind ? the recorded samples (up to 10 seconds) can be played via the keyboard and effects added as desired.


ArpeggiatorWith the arpeggiator, a chord played on the keyboard is divided into a sequence of individual notes repeated in succession. Perfect for all dance or electro styles!

Music preset

Music presetThe "Music Preset Library" contains 305 "one touch settings? based on popular rock and pop songs. The useful pre-settings for rhythm, tone, tempo, effects etc. makes time-consuming searches for the right settings a thing of the past. This assistant makes playing the "top 300" child's play!

Rhythm editor

Rhythm editorPop rhythm with a touch of jazz, jazz rhythm with a shot of pop: with the rhythm editor, elements from different rhythms can be combined and edited. 10 user slots are available for individual style editing.

Music Challenge

Music ChallengeThis practice is fun and exercises your mind too: Music Challenge is a play function where the player has to hit the illuminated keys as fast as possible. On keyboards without illuminated keys, musicians can play via the large LC display: The aim of the game is to hit the correct keys as quickly as possible.

Scale tuning

Scale tuningThe scale tuning functions open up a whole new world of oriental quarter tones and the tempering of baroque or classical music.

Octave Shift

Octave ShiftWith the Octave Shift function, the keyboard can be transposed by up to two octaves upwards or downwards.

Audio input

Audio input Play or sing along ? a solution for the future: connect a CD or MP3 player to the Audio input of your CTK-4000. Your favourite tunes are played via the loudspeakers of the keyboard in "half playback" ? you can play along for the keyboard part. A good alternative to MIDI playback, particularly if you don't want to edit the song.

USB Plug & Play/Song expansion

USB Plug & Play/Song expansionThe USB/MIDI­(GM) connection enables further Midfile songs to be loaded into the internal memory via the "Song expansion". The memory capacity is 320 KB, enabling up to 10 songs to be saved. No software installation from a CD-ROM required thanks to Plug & Play and the USB driver is compatible with both Mac and Windows (from Mac OSX 10.03 and Windows XP/Vista).

Headphone connection

Headphone connectionPeaceful enjoyment: the CTK-4000 comes equipped with a headphone connection.

Powerful loudspeaker system

Powerful loudspeaker systemPowerful sound: the amplifier system with four loudspeakers with 2 x 2,5 watt creates a harmonious and uniform sound.

Technical Specifications

Product Highlights

  • New 48-note polyphony AHL sound source
  • 570 Tones, 180 Rhythms, Registration Memory
  • New StepUp lesson system, Music Presets
  • Sampling Function, Audio-in Terminal for MP3-Player
  • Arpeggiator, Rhythm-Editor, Preset Scales (incl. Arabic)


  • Keyboard
    61 dynamic touch keys
  • Touch Response
    2 types, Off
  • Maximum Polyphony
    48 notes (24 for certain tones)
  • Built-in Tones
  • Sampling Tones
    Up to 8 (Melody Sampling: 5, Drum Sampling: 3)
    Up to 10 seconds
  • Reverb
    1 to 10, Off
  • Chorus
    1 to 5, Off
  • Metronome
    Beats per Measure: 0, 2 to 6
    Tempo Range: 30 to 255
  • Song Bank
    Built-in Songs: 152
    User Songs: Up to 10
  • Step Up Lesson
    Lessons: 4 (Listen, Watch, Remember, Auto)
    Lesson Part: L, R, LR
    Functions: Repeat, Voice Fingering Guide, Note Guide, Performance Evaluation
  • Music Challenge
    20 notes
  • Auto Accompaniment
    Built-in Rhythms: 180
    User Rhythms: Up to 10 (Accompaniment Edit)
  • Recorder
    Real-time recording, playback
  • Keyboard Play
    5 songs, 6 tracks
  • Playing Along with a Built-in Song
    1 song (L, R, LR)
  • Memory Capacity
    Approximately 12,000 notes (total for 6 songs)
  • Other Functions
    Transpose: ±1 octaves (12 semitones)
    Octave Shift: Upper/Lower ± 2 octaves
    Tuning: A4 = approx. 440 Hz ± 100 cents
    Scale Tuning: Preset Scales
    Music Preset: 305
    One Touch Preset: 180
    Auto Harmonize: 12 types
    Arpeggiator: 90 types
  • MIDI
    16 multi-tone received, GM Level 1 standard
  • Musical information Function
    Tone, Rhythm, Song Bank, numbers and names; staff notation, fingering, pedal operation, tempo, measure and beat number, chord name, etc.
  • Inputs/Outputs
    USB port: TYPE B
    Sustain jack: Standard jack (sustain, sostenuto, soft, rhythm start/stop)
    Phones/Output jack: Stereo standard jack; Output Impedance: 200?, Output Voltage: 4.5 V (RMS) MAX
    Audio in jack: Stereo mini jack; Input Impedance: 40k?, Input Sensitivity: 200mV
  • Power jack
    9 V DC
  • Power Supply
  • Batteries
    6 D-size zinc-carbon batteries or alkaline batteries
  • Battery Life
    Approximately 5 hours continuous operation on zinc-carbon batteries
  • AC Adaptor:
  • Auto Power Off
    Approximately 6minutes after last key operation (Operates during battery use only)
  • Speakers
    12 cm x 2 (Output: 2.5 W + 2.5 W)
  • Power Consumption
    9 V = 7.7 W
  • Dimensions
    95.0 x 37.6 x 13.0 cm (37 7/16 x 14 13/16 x 5 1/3 inch)
  • Weight
    Approximately 4.6 kg (10.1 lbs) (without batteries)

Specs are subject to change w/o notice.

Sours: http://www.piano.com.au/casio-ctk4000-keyboard
  1. R cran
  2. Smartphone portable projector
  3. Warhammer 40k spaceship game
  4. Golfers knowledge poster


Enhanced high-quality basic functions!

Improved sound quality and keyboard feel

AHL Sound Source

New AHL * sound source

All built-in tones, including piano and acoustic instrument tones, now sound better than ever before! 48-tone maximum polyphony provides plenty of margin to minimize the chance of notes being dropped when tones are layered and when playing with Auto Accompaniment.

  • * Acoustic & Highly-compressed Large-waveform

Piano-style keyboard

Piano-style keyboard

An easy-to-play keyboard with an appearance resembling that of an acoustic piano.

Touch Response

Touch Response let's you add delicate nuances to notes by varying how much pressure you apply to keyboard keys.

Digital effects

Use effects to add reverb for more depth and breadth in your music.

New entertainment features!

Makes music more fun than ever before


Sampling function *

Sample a sound and you can play it on the keyboard! You can create sound effects for a party or other events, or use sounds to compose music. The potential for fun is virtually unlimited!

  • * 5 sounds plus 3 drum sets (of up to 8 sounds each), 10-second maximum total sampling time


Sample sound from an audio device plugged into the Audio In jack or from a microphone plugged into the microphone jack!

You can sample a favorite phrase from a track on a digital audio player, a drum sound, a person's voice, the sound of a pet, or just about any other sound you want.

Sampling functionSampling function


Play notes on the keyboard using the sampled sound!
If you sample the "Ting!" sound of a triangle, for example, you can then play notes with the sound on the keyboard. You even can add reverb, vibrato, and other effects to the sampled sound.

Incorporate a sampled sound into accompaniment patterns!
You can sample a favorite musical phrase or drum sound, and use the same to replace some Auto Accompaniment drum sets.

Sampling function

Audio In jack

Connect a digital audio player, CD player, or other audio device and you can play along with music played through the keyboard's speakers.

Music Challenge

Test your response with an exercise that is just like playing a game!

Music Challenge tests your reaction speed by requiring you to press the keys indicated by the on-screen keyboard guide in time with the Auto Accompaniment tempo using the correct fingers indicated by the on-screen fingering guide.

Powerful lesson functions!

New lessons functions guide you along the way to music proficiency

Step Up Lesson

Pieces are divided into short, easy-to-master phrases making it easy for just about anyone to learn to play. After you master a phrase you advance to the next one. With this new lesson function, you keep building up your collection of mastered phrases and soon you are able to play the entire song.

Example song: Annie Laurie

Step Up Lesson

Scoring system

Your lesson score appears on the display screen.

Voice Fingering Guide

If the keyboard senses you are having problems, it will help you by calling out finger numbers in a simulated human voice.

Lesson part select (right hand, left hand, both hands)

152 Song Bank tunes including 50 Exercise phrases (Song Book provided * )

Built-in songs cover a wide range of genres for lesson play and for your listening enjoyment. Includes Exercise phrases!

  • * The Song Book does not include music for Exercise phrases. Due to copyright restrictions, some Song Bank tunes may not be included in the Song Book.

Song Expansion

You can load songs from external sources and use them for listening, play along, or even lessons.

  • Memory capacity is approximately 320KB, which is enough for up to 10 songs. Note that the actual number of songs that can be stored depends on the size of each individual song and other data stored in memory.
  • Songs you add using Song Expansion can be used for Step Up Lessons, but fingering guide will not be displayed for such songs.

Recorder and metronome features for lesson support

Designed and engineered to help you sound your best!

Play music from around the world

A wide selection of tones (570 high-quality tones)

A wide selection of musical instrument tones supports play of songs from various genres.

180 rhythms and Auto Accompaniments for Latin music and other styles from around the world (180 rhythms including 74 ethnic rhythms and 20 patterns for piano play)

An advanced Auto Accompaniment feature provides you with access to a large collection of ethnic rhythms from around the world, with a special emphasis on Latin rhythms. In addition to Bossa Nova, Samba, and other basic rhythms, you also get Cumbia, Reggaeton, Calypso, and more!

Rhythm Editor

10 user rhythms created by editing built-in rhythms

Music Preset

Selecting a Music Preset instantly changes the keyboard setup (tone, rhythm, tempo, etc.) so it is ideal for playing a specific song. The selection of setups covers a wide range of musical genres.

Preset Scale

Change the scale (temperament) of the keyboard quickly and easily to suit Oriental music or certain types of classical music.

Musical Information System (Large, Backlit LCD)

A wealth of information is displayed to support your keyboard play.

  • USB

Versatile expandability

  • USB port for computer connection *
  • General MIDI (GM Level 1) support allows connection with a computer or another GM-compatible device.
  • * Supported operating systems: Windows ® XP Home Edition (SP2 or later), Windows ® XP Professional (SP2 or later, 32-bit), Windows Vista ® (32-bit), Windows ® 7 (32-bit, 64-bit), Mac OS ® X (10.3.9, 10.4.11 or later, 10.5.6 or later, 10.6.2 or later)
    For the latest news about driver and application support under Windows ® 7, visit here .

More powerful features and functions

  • Recorder for composing and play
  • Registration for storage of keyboard setups and instant recall when you need them
  • One Touch Preset automatically sets up the keyboard to match the Currently selected rhythm.
  • Auto Harmonize adds appropriate harmony notes to your melody automatically.
  • Arpeggiator simplifies arpeggio play.
Sours: http://arch.casio-intl.com/asia-mea/en/emi/standard/ctk4000/

Casio CTK-4000 Personal Keyboard, 61-Key, with MP3 Connection, 10 Second Sampling, and Digital Effects

61-Key Keyboard. Published by Casio.

Casio CTK400 61-Key Keyboard

The Casio CTK4000 61 key portable keyboard is loaded with great sounds and music-making features, so it's great for beginning players, advanced players, and everyone in between! 570 sounds, 180 rhythms, and 152 songs/lessons will keep you busy with the Casio CTK4000, while a new sampling function makes it more fun than play with than ever. Pick a sound - up to 10 seconds - on your portable audio device, then play the sound as you press piano keys to spice up your playing. Built-in lessons, facilitated by the graphic screen, are great for beginners. The USB port makes it easy to connect the Casio CTK4000 to your computer.

Key Features:

  • Packed with instrument sounds and effects
  • Built-in speakers
  • Drum rhythms help you write songs and practice
  • Built-in lessons and play-along songs
  • New sound sampling feature
  • USB connection, recorder, auto-harmonizer, arpeggiator, and more

Additional Features and Specifications:

  • 61 piano-style keys
  • Touch Response (2 sensitivity levels, off)
  • 48-note polyphony (maximum)
  • 570 high-quality tones including stereo grand piano tones
  • 180 rhythms including 74 ethnic rhythms and 20 patterns for piano play
  • Rhythm Editor: 10 user rhythms
  • Auto-accompaniment
  • 152 Song Bank tunes, including 50 Exercise phrases
  • Music Preset (305 presets)
  • Registration (8 banks x 4 sets for 32 setups)
  • One Touch Preset (180 presets)
  • Digital Effects: 10 reverbs, 5 choruses
  • Preset Scale (16 scales)
  • Rhythm / Song Bank Controller
  • Song Expansion: 10 songs maximum, approximately 320 KB total
  • Recorder: 6 tracks x 5 songs, 1 lesson song, approximately 12,000 notes total
  • Metronom
Sours: https://www.amazon.in/Casio-CTK-4000-Personal-Keyboard-Connection/dp/B001FSJC1E

4000 ctk



61 piano-type keys

Touch Response

2 sensitivity levels, Off

Sound Source


Maximum Polyphony



570 built-in tones


Layer, Split

Digital Effects

  • Reverb: 10 types
  • Chorus: 5 types


180 built-in rhythms (10 user rhythms)

Auto Accompaniment

  • Modes: CASIO Chord, Fingered 1, Fingered 2 (6th off), Fingered 3 (on bass), Full Range Chord
  • Controllers: Start/Stop, Intro, Normal/Fill-in, Variation/Fill-in, Synchro/Ending

Built-in Songs

152 (Song Bank)

Song Expansion

10 maximum (up to 320KB total)

Lesson Function

  • Step up lesson
  • Scoring system
  • Voice fingering guide
(Lesson part : right hand, left hand, both hands)


Beats: 0, 2, 3, 4, 5, 6 (Tempo range: quarter note = 30 to 255)


6 tracks x 5 songs (performance recording), 1 song (lesson recording), approximately 12,000 notes total, real-time recording/playback

Sampling Function

  • Maximum sampling capacity: 8 sounds
  • Maximum total sampling time: 10 seconds
  • Sampling sound input: Audio in jack

Other Functions

  • Rhythm editor (10 user rhythms)
  • Registrations: 32 setups (4 sets x 8 banks)
  • Music preset: 305 presets
  • One-touch preset: 180 sets
  • Auto harmonize: 12 types
  • Arpeggiator: 90 types
  • Temperaments (preset scale): Equal temperament + 16 types
  • Octave shift: ±2 octaves
  • Music challenge
  • Rhythm/song controller

Key Transpose

25 steps (-12 to +12 semitones)

Tuning Control

A4 = approximatery 440 Hz ± 100 cents


Standard jack (sustain, soft, sostenuto, start/stop)

Display Screen

LCD with backlight


  • GM Compatibility: Level1
  • Terminals: USB


12cm x 2

Amp Output


Input/Output Terminals

  • Headphones/output (standard stereo jack)
  • Sustain/assignable
  • Audio in
  • USB: type B
  • External power (9V DC)
* USB cable (A-B type) required to use USB terminal for computer connection.

Power Requirements

Batteries: D-sizex6/Optional AC adaptor: AD-5

Dimensions (W x D x H)

950 x 376 x 130mm
* Excluding music stand, and other projections


4.6kg (Excluding batteries)

Included Accessories

Song book, music stand

EAN code


Sours: http://arch.casio-intl.com/asia-mea/en/emi/standard/ctk4000/spec/
Casio CTK-4000 Keyboard Review


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