Japan
Keys first: weighted actions and short sound lists
Casio’s three instruments on this site all make the same trade in different proportions: fewer features, better keys, smaller cabinet.
The CDP-S110 is the most complete box at its price. Scaled Hammer Action II across 88 keys, and the SP-3 pedal, music rest and power adapter included — three purchases most rivals leave to the buyer. It is 99 mm (3.90 in) deep and 10.5 kg (23.1 lb), which is closer to a controller than to a piano.
The CT-S1 removes the arranger on purpose. Casio states plainly that there is no auto-accompaniment. Sixty-one sounds, no styles, and the space spent on the sound source and speakers instead. That is a real editorial position for a manufacturer to take, and it is stated rather than hidden.
One listing contradicts itself, and we say so on the page. The CT-S1 fiche carries the bullet text of the 76-key model — 76 keys — while its title, model number and stated dimensions all describe the 61-key instrument. Where sources disagree, this site reports the disagreement rather than picking one quietly.
Prices diverge sharply between stores. The CT-S1 stood at $573 on the American store against 205 € in Germany, and the 76-key version at £435 in the UK. The measurement is right; the offer is different.
61 touch-sensitive keys · 61 sounds · no auto-accompaniment
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.
Best for: Someone who wants piano sounds and 61 keys without an arranger’s menus.
≈ $560
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
88 weighted keys · 10 sounds · pedal and stand included
A slim 88-key board with Casio’s Scaled Hammer Action II and, unusually at this price, the SP-3 pedal, music rest and power adapter already in the box. Ten sounds rather than hundreds — the money went into the keys.
Best for: A first weighted piano where the pedal and adapter should not be a second order.
≈ $820
88 keys with touch response · 13 hours on batteries · 23.1 lb · stand and bench in the bundle
A bundle rather than an instrument alone: the CDP-S160 with a stand, a bench, a pedal, a music stand, an adapter and headphones — and the only piano here to publish a battery life and a weight.
Best for: A first piano that has to arrive complete, stand and bench included, and be carried occasionally.
Prices quoted in these summaries are dated readings. The live price is shown next to each product.
