CT-S400 Electronic Keyboard


A Great Performer

The CT-S400 is an ideal instrument for new keyboard learners and those returning to making music. It has 61-touch sensitive keys for expressive playing and is really easy to use thanks to it's easy to read full graphic display

  • 61 Touch sensitive, textured keys.
  • 600 High quality AiX sounds. 
  • 200 Automatic accompaniments. 
  • NEW Bass Reflex speaker system.
  • Surround Sound mode. 
  • Connects to smarphone or tablet.
  • Optional Bluetooth dongle for wireless connectivity.
  • FREE Online lessons (worth £49.99)

Coming Soon

Making Music Easy and Enjoyable

The CT-S400 is a compact and versatile keyboard, designed to help you enjoy learning and creating music.

The new, backlit full graphic screen shows options clearly and is easy to read, so you can find your way around without frustration.

We’ve reduced the number of buttons, too, and added a new jogwheel control. Changing sounds and settings has never been easier or more intuitive.

Compact Size, Incredible Sound.

Using Casio’s advanced AiX sound technology, the CT-S400 boasts an expressive grand piano tone and much more. With over 600 tones to choose from, which can all be layered and adjusted, you’ll find musical inspiration in no time at all.

Newly developed Bass Reflex speakers and Surround Sound mode mean a richer, more dynamic tone that complements the excellent sound quality.

The CT-S400 has a sound that you’ll enjoy playing and listening to over and over again.

Learn with Chordana Play.

Compatible with Android and iOS devices, Chordana Play connects via USB or optional Bluetooth dongle and teaches you to play in a fun, visual way.

Select from a library of over 50 traditional songs or import any MIDI file you choose. Follow the music score or piano roll notation at your own pace, with the app guiding you through each step.

Make It Yours.

When you’ve found your favourite sound and style combinations, save them in any of the 32 Registration Memories. This means you can access them at a press of a button without having to setup the keyboard all over again.

With a USB Flash drive (purchased separately) you can expand the vast library of tones, registrations and styles available for more choice when performing. Plus, you can also save and load standard MIDI song files direct from USB memory, giving you access to commercial backing tracks etc.

Interactive Online Learning Included. 

The CT-S400 comes with a range of features to help you get the best from learning the keyboard at home. Your purchase includes FREE unlimited access to the Casio Music Academy.

Designed by music teachers, this online portal combines video tutorials with an app that connects to your keyboard via USB (cable required) or Bluetooth dongle (optional purchase), analyses your playing and shows you how to improve, step-by-step.

Get Creative, Anywhere.

Weighing just 4.5kg, the CT-S400 can be powered with an AC power adapter (included) or from 6 AA batteries (for up to 4 hours), which is perfect for making music on the move.

If you love creating music, you’ll find the 5 track MIDI recorder on the CT-S400 really useful. Enhance your performance with Auto Harmonize and Arpeggiator functions that follow your playing and provide extra musical parts automatically.

If you play with automatic accompaniment styles, you’ll love the different chord fingering types available, making it easy to perform your way. The CT-S400 will recognise fingered, single-fingered, on-bass and full range chords.

Go Wireless with Bluetooth.

The optional WU-BT10 Bluetooth dongle allows you to add Bluetooth Audio and Bluetooth MIDI capabilities to your CT-S400.

This means you can stream music through the keyboard’s speakers and play along to your favourite tracks, or use the CT-S400 as a wireless MIDI controller with your music apps (purchased separately).

With Great Music from Rockschool. 

Choosing an instrument is only the beginning of your musical journey.  The next challenge is learning to play. 

To give you and your family the best start, we’ve teamed up with Rockschool, a leading music exams board for rock and pop music. 

The CT-S400 includes a selection of FREE music downloads with backing tracks, all designed by leading music educators to help build your skills. 

CT-S400 Highlights

AC or battery powered, for taking your music anywhere.

61 note, touch-sensitive keyboard with piano-shaped keys.

600 High Quality AiX Sounds.

200 Automatic Accompaniments.

Sustain Pedal Input.

Surround Sound mode.

Connects to Chordana Play.

5 Track Song Recorder.

USB computer connection.

USB flash drive connection.

Headphone connection for silent practice (headphones purchased separately).

Unlimited access to the Casio Music Academy.

Includes genuine UK power adapter. 

Weight 4.5g (excluding batteries). 

Speakers: 2.5 watt + 2.5 watt with Bass Reflex System


All of our products come with at least 2 years warranty.


Standard Delivery

(UK Mainland 2-4 Working Days) £2.95 (Free for orders over £50). (EIRE Southern Ireland & Channel Islands 4-7 working days). 

Our nominated carrier is Parcel Force. Deliveries are made Monday – Friday between 9.00am – 6.00pm (excluding Bank Holidays).

All Grand Hybrid and selected Home Pianos will be delivered via our nominated carriers - TNT or Pianospeed (model dependent).

TNT Delivery
Express delivery option not available. 
Delivery via TNT couriers. This is a drop off service to a ground floor only.
Casio will email within 48hrs to arrange a suitable delivery day. Deliveries are  between Monday - Friday any time between 8am - 6pm. Excludes Bank Holidays.

Republic of Ireland and Channel Islands Delivery:
Please expect delivery within 7-10 business days. Customs duty charges will apply [ROI only]

Pianospeed Delivery
Express delivery option not available. 
Delivery will be completed via dedicated courier partners "Pianospeed". 
Service includes delivery and assembly to a ground floor address only (for additonal requirements email ecom@casio.co.uk).
Pianospeed will contact within 48-72 hrs [Mon-Fri] to arrange a suitable delivery day. Deliveries are  between Monday - Friday any time between 8am - 6pm. Excludes Bank Holidays.
If you require any further information relating to the Delivery service used, please call us at +44 (0) 208 450 9131.


If for any reason you change your mind or are not satisfied with your purchase, please return your purchase to Casio within 28 days of purchase. Please note that with the exception of faulty products, we cannot accept the return of items, which have been opened or used. This does not affect your statutory rights.

The below process should be followed:

 1 - Complete the short form that accompanies your product. Please ensure that you complete all of the sections, as this will guarantee the timely processing of your return/exchange.

 2 - Place your item in the original packaging along with the form. Please ensure that the product is pristine with all original manuals and tags.

 3 - Send the box to us using a recorded/signed & trackable service to the address below. Please note, we cannot be held responsible for a package that has not been received by us.

 4 - Return Address

Yusen Logistics Co Ltd
Casio Returns - Bay 32
Bradbourne Drive
Milton Keynes

Tel: +44 (0) 208 450 9131
Email: returns@casio.co.uk

 5 - Retain your tracking details, until you receive notification from Casio that your returned product has been safely received. Once received and processed, it may take up to 5-7 business days for your refund to be displayed on your payment card statement.