Casio CT-S1 Red

NOTE: B-Stock keyboard from Casio. Opened/unboxed in-store. As new.

Casio T-S1 – compact Casiotone with AiX Sound Source and 61 touch-responsive piano-style keys

Casio CT-S1 is a slim, portable Casiotone keyboard designed to keep the focus on playing, whether at home, in a rehearsal space or on the move. With AiX Sound Source and 61 carefully selected tones—ranging from acoustic piano and electric piano to organ and Casio Classic tones—it’s built for immediacy and musical character rather than menu-heavy operation.

The newly developed built-in speaker system with a horizontal bass-reflex design is aimed at clear projection and solid low-end in a compact chassis, while Volume-Sync EQ helps maintain tonal balance even at lower listening levels.

Overview and key features

CT-S1 is laid out with a minimalist approach, giving fast access to inspiring instrument sounds. The 61-tone palette includes modern “Advanced Tones” as well as classic-inspired sounds based on analyses of traditional instruments and Casio’s own keyboard heritage.

For practice and playing along, the product information references the Chordana Play app, including playback adjustments across different modes and options such as cancelling melody or accompaniment to create a backing track to play to (functionality depends on the app).

Design and speaker system

The compact form factor makes the instrument easy to place in small spaces. Casio highlights a newly developed speaker system with custom-designed speakers and a horizontal bass-reflex structure, plus a surround-inspired listening experience for a fuller sound field. Volume-Sync EQ automatically adjusts bass and treble to keep the sound balanced when the volume is turned down.

Connectivity and integration

CT-S1 includes USB-to-host for computer connection (referenced in the source text as “optional”) and an audio input for external audio sources. With the WU-BT10 wireless MIDI/audio adapter (sold separately), you can pair a smartphone or tablet, play audio through CT-S1’s speakers, and use wireless MIDI with compatible apps.

FAQ

What does AiX Sound Source mean on the CT-S1?
AiX Sound Source is Casio’s sound platform behind CT-S1’s tones, designed to deliver a more authentic playing experience with clear character in each instrument sound.

Can I play music from my phone through the CT-S1 speakers?
Yes. Using the WU-BT10 wireless MIDI/audio adapter (sold separately), you can pair a smart device and play audio through CT-S1’s built-in speaker system.

Does CT-S1 work with learning or play-along apps?
Yes. The product information mentions the Chordana Play app, with features for adjusting playback such as key and tempo, plus options to cancel melody or accompaniment (depending on the app).

How many tones does the CT-S1 include?
CT-S1 includes 61 tones according to the provided information, including acoustic piano, electric piano and organ, plus both “Advanced Tones” and “Casio Classic Tones”.

Specifications

• Type: Keyboard / Casiotone
• Keys: 61 touch-responsive piano-style keys
• Tones: 61
• Sound engine: AiX Sound Source
• Speakers: Built-in speaker system with horizontal bass-reflex design (per provided information)
• EQ feature: Volume-Sync EQ (per provided information)
• Wireless connectivity: Via WU-BT10 (sold separately)
• Computer connection: USB-to-host (per provided information; referenced as “optional”)
• Audio input: Yes (per provided information)
• App support: Chordana Play (per provided information)