PORTABLE KEYBOARD
No matter where you are, the compact CTK-2400 turns each piece of music into a true sound experience. Let yourself be carried away with the wide range of 400 AHL tones and become acquainted with the improved sampling function: Using the built-in microphone, it's easy to record samples and integrate them into the rhythm. Additional features, such as the 150 rhythms or the step-up learning system, ensure a lively introduction to the world of music and make each performance an exciting acoustic experience.
Sound EFX Sampler
Built-In Microphone
Step-up learning system
400 Keyboard Voices
48 Note Polyphony
150 Rythms
110 Songs
 
 
USB MIDI
Casio continues the tradition or providing "class compliant" USB connectivity on Portable digital pianos. This allows Casio Portable digital pianos to be used with Mac or Windows computers without the need for downloading drivers. Class Compliant USB MIDI also allows Casio digital pianos to be used as a controller with the Apple iPad simply with the use of Apple's Camera Connection Kit.

POLYPHONY
Casio’s CTK-2400 offers 48 notes of polyphony so you don't have to worry about dropping notes. Using the sustain pedal for multiple notes, playing big chords, adding rhythms and layering sounds can deplete the polyphony memory quickly resulting in dropped notes. When searching for a keyboard, take the amount of polyphony into consideration.
 
 
BUILT IN SONGS
The CTK-2400 has an impressive library of 110 built-in songs. Whether you are using the songs to learn with the Step Up Lesson system, or playing along with a song for fun, you will find greater choices to meet your needs. Compare the number of songs to other manufacturers and you will see Casio has the better value.

POWER... INCLUDED
Not only is the CTK-2400 a powerful keyboard but unlike other companies, Casio includes the AC adapter with all full sized keyboards so you can start making music right away.

PRESET RHYTHMS
Casio's CTK-2400 includes 150 preset rhythms built into the keyboard. Additional rhythms expand your music composition, creativity and fun.
 
CASIO CTK-2400 61-KEY PORTABLE KEYBOARD SPECIFICATIONS:
Number of Keys: 61 (Piano-style)
Sound Source: AHL
Polyphony: 48
MIDI: GM Level 1 standard
Key Transpose: -12 to +12 semitones
Tuning: A4 = 415.5Hz to 465.9Hz (initial Default- 440.0Hz)
Number of Built-in Tones: 400
Sampling Function: Maximum Sampling Time 2 sec. 
Sampling Sound Input: Built-in Mic / MIC IN
Variety of Sampled Tones and Effects: 26 (1 Long Sampling, 5 Short Sampling, 10 Effects for Long Sampling and 10 Effects for Short Sampling)
FX: Reverb: 10
Number of Built-in Rhythms: 150 (including 20 for piano play and 55 world rhythms)
Accompaniment: On / Off
- Chord Input Mode: Fingered 1
- Fingered 2 (6th Off)
- Fingered 3 (On Bass)
- Casio Chord
- Full Range Chord
Controller: Start / Stop
- Intro
- Normal / Fill-in
- Variation / Fill-in
- Synchro / Ending
Accompaniment Volume: 0 to 27
One Touch Preset: 150
Song Bank: Number of Built-in tunes (Exercise Phrase): 110 (including 20 Exercise Phrases, No copy right song)
Controller: PLAY / STOP (Wiedergabe/Stopp)
- FF
- REW
- PAUSE
- REPEAT
Pre-count: Yes
Song Volume: 0 to 27
Lesson Function: Step Up Lesson: Yes
- Right Hand, Left Hand, Both Hands
- LISTEN, WATCH, REMEMBER, NEXT, AUTO
- Scoring System
- Voice Fingering Guide
Music Challenge: No
Metronome: Yes
Tempo: 30 to 255BPM
Demo Song: Normal Demo: 90 songs loop play (excepting Exercise Phrase)
Sampled Tone Demo: 1
Auto Start Demo: No
Pads: No
Pitch Bend Wheel: No
Display: 92mm x 40mm LCD (no backlight)
Terminals: USB: Yes (To Host)
- AUDIO IN: Yes (not Sampling Sound Input)
- MIC IN: No
- Built-in Mic: Yes
- Sustain Jack: Yes
- Phones / Output: Yes
- DC In: 9.5V
Speaker: 10cm x 2
Amplifiers: 2W + 2W
Power Supply: 9.5V DC (AD-E95100L) / 6 AA-size batteries
Auto Power Off: Yes (Approx. 6 min. during battery operation 
or 30 min during AC adaptor operation)