The arranger that survives the first year · review
A keyboard built like a piano rather than like an arranger: 61 touch-sensitive keys, 61 sounds, and deliberately no accompaniment styles. Music rest and power adapter are included; the pedal is not.
What it amounts to The anti-arranger: 61 sounds, no styles, and the accessories that matter already in the box.
Casio’s Casiotone line is normally about accompaniment styles. The CT-S1 is the model that removes them entirely — Casio states plainly that there is no auto-accompaniment — and spends the space on the sound source and the speakers instead.
What you get is 61 touch-sensitive keys, 61 sounds from the AiX engine including ten Advanced and twelve Classic Casio tones, a 2 × 2.5 W speaker system, and the connections that matter: USB-to-Host for a computer, a headphone socket, an audio input and a pedal socket.
The pedal is not in the box, which is the one purchase to plan for. The music rest and the power adapter are, which removes two.
One honest oddity: the bullet list on this listing describes 76 keys, which is the text of the larger CT-S1-76. The title, the model number and the stated dimensions all describe the 61-key instrument. We report the discrepancy rather than choosing silently, because the two models are otherwise near-identical and easy to confuse.
| Keys | 61, touch-sensitive |
|---|---|
| Sounds | 61 from the AiX sound source, including 10 Advanced and 12 Classic Casio tones |
| Accompaniment | None — Casio states there is no auto-accompaniment |
| Speakers | 2 × 2.5 W |
| Connections | USB-to-Host, headphone, audio in, pedal socket |
| In the box | Music rest and power adapter — pedal not included |
| Dimensions and weight | 930 × 258 × 83 mm (36.6 × 10.2 × 3.27 in) · 4.5 kg |
| Options | Bluetooth audio/MIDI via the WU-BT10 adapter; battery operation — neither included |
| Amazon reference | B091PCRRN1 (identical on 6 markets) |
| EAN | 4971850315087 |
The bullet list on this listing carries the text of the 76-key CT-S1, while the title, the model name and the stated dimensions (930 mm (36.6 in), 4.5 kg (9.9 lb)) are those of the 61-key version. Where sources contradict, this site says so rather than picking one quietly.
It is a different instrument. Casio removed the styles and spent the space on sounds and speakers. If you are learning piano rather than arranging songs, the absence is the point.
7.8/ 10
The anti-arranger: 61 sounds, no styles, and the accessories that matter already in the box.
Shown because the accessory names this instrument itself.
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom, United States. Listed is not the same as in stock — availability changes daily.
Details checked on August 18, 2026.
Someone who wants piano sounds and 61 keys without an arranger’s menus.
Specifications: the manufacturer sheet for musical instruments and gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
76 touch-sensitive keys · 61 sounds · 2 × 6.5 W
The 76-key version of the same idea, with a bigger speaker system: 2 × 6.5 W instead of 2 × 2.5 W. Still no accompaniment styles, still 61 sounds, and 80 cm (31.5 in) longer in the room.
Best for: A player who has run out of keys on a 61 but does not want an 88-key weighted piano.
≈ $510
61 keys · microphone output and a built-in microphone · 100 tones · 4 AA batteries
The least expensive keyboard on this shelf by a wide margin, and the only one that records a voice — a microphone output and a built-in microphone — with 100 tones, eight percussion panels and battery operation.
Best for: A child learning at a desk, where a microphone and a set of batteries matter more than a published key size.
61 touch-sensitive keys · 650 sounds · 260 styles · 48-note polyphony
The arranger answer to the Casio: 650 sounds, 260 accompaniment styles, 48-note polyphony and a structured lesson system with 125 built-in songs.
Best for: A beginner who wants to play songs with accompaniment from the first week.
