The Casiotone CT-S400 is a great-sounding, ultra-portable keyboard that is perfect for making music at home or on the go. With hundreds of incredible Tones and Rhythms, the CT-S400 will inspire players of any age, skill level or budget for years to come.
*Includes power supply and music rest.
 
61 full-size keys with touch response, pitch bend wheel and easy-to-use controls
600 AiX-powered Tones and 200 full accompaniment Rhythms
Powerful bass-reflex stereo speaker system with surround effect
5-track song recorder
Strap pins for playing anywhere
Class-compliant USB-MIDI connects to free Casio Music Space app
Optional WU-BT01 Bluetooth MIDI/Audio adapter
Optional 6xAA battery power (AC adapter and music rest included)
Keys to the Kingdom
Casiotone CT-S400 keyboard on a floor
The CT-S400 features 61 full-size, touch responsive keys in a sleek, stylish case that weighs under 10 pounds. The easy-to-read LCD display and intuitive controls give you everything you need to bring your music to life. Use the pitch bend wheel to add natural (or supernatural) expression to your playing.
The Heart of a Champion
Musician happily playing a Casiotone CT-S400 keyboard
The AiX Sound Source delivers sound quality that you'd expect from a keyboard costing hundreds, if not thousands more. Power on the CT-S400, and you'll be presented with a dynamic, expressive German concert grand piano placed in a virtual concert hall. Inside the collection of 600 Tones, you'll also find greatsounding electric pianos, organs, strings, synths, and more.
A World of Music to Explore
Child and adult playing Casiotone CT-S400 keyboard on the floor
The CT-S400's 200 full-accompaniment Rhythms make it a perfect jamming partner. Simply play a few notes, and it will create an entire backing band that reacts effortlessly to the way you play. No matter what kind of mood you're in, your Casiotone is always ready to back you up with vibrant acoustic drums, vintage drum machines, global percussion instruments, rock-solid basslines, horn ensembles, rhythm guitars, and so much more.
Small Size, Huge Sound
Musician playing a Casiotone CT-S400 keyboard
There are three ways to experience the CT-S400's amazing sound quality at its best. First, the bass-ported speaker system delivers punch and clarity throughout the entire volume range. Second, plug in a good set of headphones for personal play. Third, turn on SURROUND, and the sound from the speakers will place you right in the middle of your music.
Take It To Go
Musician sitting on a couch wearing the Casiotone CT-S400 keyboard with strap
With a CT-S400, there’s no reason to feel tied down. Just pop in 6 AA batteries, attach a strap, and wherever you are becomes center stage.
Connected to Your World
Ipad app on the Casiotone CT-S400 keyboard stand
The microUSB port connects your CT-S400 to any PC, Mac, iOS or Android device with no drivers or installation needed. Use the free Casio Music Space app to learn to play your favorite songs with downloadable MIDI files. With the optional WU-BT10 Bluetooth MIDI/audio adapter, you can even connect wirelessly to your favorite devices to control them via MIDI, or to use the CT-S400 as a Bluetooth speaker.