Description

Casio CT-S400 Electronic Keyboard

The Casio CT-S400 is a 61-key, touch-sensitive keyboard featuring an ultra-slim, portable design with a built-in carrying handle. The CT-S400 offers countless ways to enjoy the thrill of music

Highlights

• Touch Response — add intensity and rich expression to each note you play
• Tone Memory — store all your favourite tones and settings for instant recall
• Layer Function — expand your performance range by layering two tones
• Metronome — keep time in practice and performance
• MIDI Recorder — record your performances and play them back
• Phones/output jack — tuck yourself away from the world around you as you play

Sounds to Inspire

Challenging the traditional idea of what defines a “real” instrument, the CT-S400 features AiX Sound Source technology that captures the nuanced expression of a wide range of instruments. With a vibrant selection of sounds at your fingertips, your creativity never has to pause. From piano and strings to brass, synths, bass, and drums — its 600 tones open the door to limitless musical possibilities across any genre.

Big Sound, Small Package

Don’t let the CT-S400’s compact form fool you — its Horizontal Bass Reflex technology enhances low-end depth, while custom-designed speakers deliver rich, dynamic audio. Activate the surround sound feature and feel the immersive energy and clarity of true musical power. The Volume-Sync EQ automatically fine-tunes the bass and treble balance, ensuring full, vibrant sound even at lower volumes. Enjoy an exceptional listening experience, all from the comfort of your home.

Straight to What Matters

The CT-S400 keeps things simple with a clean console layout featuring only the essential buttons, plus a large dial and LCD screen for quick tone selection and setting adjustments. The intuitive design feels instantly familiar, so you can focus on playing, not navigating.
Unleash creativity with My Setup — customize and assign your preferred functions to the five buttons below the screen, giving you instant access to your favorite settings with a single touch. Personalize the CT-S400 and let your music reflect you.

You Play the Melody, Casiotone Handles the Rest

The CT-S400 transforms solo sessions into full-band experiences. With 200 rhythmic patterns spanning a wide variety of genres, you can jam along to your favorite styles effortlessly. Bring the thrill of group performance into your space with 160 built-in songs and an automatic backing function that simulates playing with other musicians.
Take control by adjusting the tempo or focusing on just the left or right-hand parts for targeted practice. It’s all about keeping things fun, flexible, and completely stress-free — practice your way, at your own pace.

Your Music, Anytime, Anywhere

Compact yet powerful, the CT-S400 is designed to go wherever inspiration strikes. Its slim, lightweight build makes it easy to carry and set up in any space — no stand or desk required. Whether you're short on room or always on the move, the built-in strap pins add extra flexibility. Wherever you are, the CT-S400 is your reliable musical companion, always ready to play.

Smart, Creative, and Seamlessly Connected

The CT-S400 opens up endless ways to enjoy and explore music. With the optional Wireless MIDI & Audio Adapter WU-BT10*, you can stream audio directly from your smartphone or tablet through the keyboard’s powerful speakers. Dive deeper with the CASIO MUSIC SPACE app — view sheet music for built-in songs or customise your experience in Audio Mode by adjusting the key and tempo, or by muting melodies and accompaniments to turn your favourite tracks into your personal backing band.

MIDI functionality makes learning engaging and interactive. Play along with the piano roll, connect to other MIDI-compatible apps or devices, and tailor each session to suit your style. It’s time to rethink practice — make it creative, personal, and fun.

CT-S400 Specification

Keyboard

• Number of Keys: 61

• Touch Response: 3 sensitivity levels, Off

• Design: Compact and lightweight with a clean layout and intuitive interface, making setup and play effortless in any space

Sound

• Sound Source: AiX – Interprets the expressive complexity of real instruments, delivering rich and realistic tones

• Maximum Polyphony: 48 notes

• Tones: 600 – A wide variety of instruments including piano, strings, brass, synths, bass, and drums, covering all genres

Rhythms & Accompaniment

• Rhythms/Patterns: 200 preset rhythms + 10 user rhythms

• Automatic Accompaniment: Yes – Create the feel of playing with a full band

• Built-in Songs: 160 + 10 User Songs

• Demonstration Songs: 1

• Lesson Part Select: Yes – Practice left or right-hand parts independently

Recording & Practice Tools

• Recorder (MIDI):

  • 5 songs, 6 tracks (1 system track + 5 solo tracks)

  • Up to 40,000 notes per song

• My Setup: Assign your preferred functions to 5 customizable buttons under the LCD screen for instant access

• Volume-Sync EQ: Automatically balances bass and treble for punchy sound even at low volumes

• Practice Features: Adjustable tempo, melody and accompaniment muting for effective practice sessions

Connectivity & Integration

• Wireless Audio & MIDI: Optional WU-BT10 adapter allows streaming from smart devices and MIDI connectivity

• App Integration:

  • CASIO MUSIC SPACE app for score display, tempo/key control, and audio track customization

  • MIDI compatibility enables interaction with external apps and devices for tailored lessons and creative play

• Audio Features: Use “Cancel Melody” and “Cancel Accompaniment” to turn your favorite tracks into backing tracks

Speakers & Amplifier

• Speaker Size: [13 cm × 6 cm] × 2 – Custom speakers deliver vivid, powerful sound

• Amplifier Output: 2.5W + 2.5W

• Bass Enhancement: Horizontal Bass Reflex system boosts low frequencies

• Surround Sound: Enables immersive, room-filling audio experience

Power Supply

• AC Adapter: AD-E95100L (DC 9.5V)

• Battery Operation:

  • 6 × AA alkaline or rechargeable nickel metal hydride batteries

  • Approx. 4 hours continuous use (depending on conditions)

  • eneloop batteries used in testing (Panasonic trademark)

Power Consumption

• 7.5 W

Dimensions & Weight

• Size: 930 × 258 × 84 mm (without music stand)

• Weight: 4.5 kg (without batteries)

Design & Portability

• Colour: Black

• Portability Features: Strap pins for playing anywhere without a desk or stand – ideal for limited spaces or on-the-go music making

Included Accessories

• Music Stand

• Strap Lock