Casio CT S1 WE

Casiotone CT-S1WE — Portable 61-Key Keyboard with AiX Sound

The Casio CT-S1WE is a slim 61-key portable keyboard for players wanting expressive sound without the bulk of a full digital piano. Weighing 4.5 kg in clean white, this Casiotone fits a living room corner, bedroom, or backpack. Casio's AiX Sound Source delivers 61 tones from acoustic piano and electric piano to organ, harpsichord, and Mellotron-style tape flute. Headphones or the built-in Horizontal Bass Reflex speakers handle output.

What Sets the CT-S1WE Apart

At the core is Casio's AiX Sound Source, the same engine used in higher-tier Privia and Celviano digital pianos, paired with 10 Advanced Tones that capture vintage electric pianos and tonewheel organs. The 12 Casio Classic Tones recreate the character of the original Casiotone 201 from the 1980s, offering synth strings, bells, and lo-fi keys. Volume-Sync EQ balances bass and treble at any listening level.

Touch Response, Polyphony, and Connectivity

Touch-sensitive keys respond to dynamics with three sensitivity levels plus off. With 64-note maximum polyphony, layered passages ring out without notes dropping out. Connectivity includes a 3.5 mm TRS pedal input, a 3.5 mm headphone/output jack, a stereo mini audio input, USB-Micro B for MIDI, and a USB Type-A port for the optional WU-BT10 Wireless MIDI & Audio Adaptor.

• Keyboard: 61 touch-sensitive keys — three sensitivity levels plus off
• Polyphony: 64 notes — headroom for layered tones
• Effects: Chorus, Reverb, Delay, DSP, Master EQ
• Recording: MIDI recorder, 1 song, up to 40,000 notes
• Power: AC adaptor or 6 AA batteries, approx. 3 hours

Who Should Choose the CT-S1WE

Beginner and intermediate players, casual home musicians, and songwriters will find the CT-S1WE a strong match for anyone wanting a portable keyboard with serious sound quality at an accessible price. The 61-key layout covers five octaves, enough for most pop, jazz, and classical repertoire, while the slim body and battery operation suit small apartments, dorm rooms, and travel. The WU-BT10 adapter unlocks wireless MIDI and audio streaming through the CASIO MUSIC SPACE app.

The Casiotone Heritage

The Casiotone line debuted in 1980 with the Casiotone 201, one of Casio's first affordable electronic keyboards that brought music-making into living rooms worldwide. This model continues that legacy with 12 Casio Classic Tones recreating the character of those early instruments, including synth strings, bells, and lo-fi keys. By combining vintage charm with modern AiX technology, the CT-S1WE bridges four decades of keyboard design.