Casio digital pianos and keyboards: which one is yours?
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Casio makes two quite different things that sit on the same shelf. One is a digital piano — 88 hammer-weighted keys, built to teach and reward piano technique. The other is a portable keyboard — 61 lighter keys, built to be carried, played and enjoyed without a teacher in the room. They look alike in photographs and they are not alike under the hands.
This page covers the six Casio instruments we stock, what separates them, and who each one is actually for. If you have not settled on Casio yet, start with our broader guide, How to Choose a Digital Piano or Keyboard, which works through the category from scratch.
Prices below are ours and are correct as at 5 August 2026 — check the live price on each product page before you commit.
The whole range, in one table
| Keys | Action | Pedal in the box | Price | |
|---|---|---|---|---|
| Casio CT-S100 | 61 | Unweighted, no touch response | None; Casio lists no pedal jack | $217.95 |
| Casio Casiotone CT-S1 | 61 | Unweighted, 3 touch levels | None; 6.3 mm pedal jack fitted | $367.95 |
| Casio CDP-S110 | 88 | Scaled Hammer Action II | SP-3 footswitch | $597.95 |
| Casio PX-S1100 | 88 | Smart Scaled Hammer | SP-3 footswitch | $947.95 |
| Casio PX-770 | 88 | Tri-sensor Scaled Hammer II | 3 built in, half-damper | $1,027.95 |
| Casio PX-S7000 | 88 | Smart Hybrid Hammer | 3 fixed, on the included stand | $3,397.95 |
Decision one: 61 keys or 88?
This is the fork that decides everything after it, and it is not really a question about size. Eighty-eight hammer-weighted keys and a damper pedal are what graded piano repertoire and proper technique are built around. Sixty-one unweighted keys is five octaves of a different instrument — faster under the fingers for organ, synth and electric-piano parts, lighter to carry, and not a cheaper piano.
If lessons have been mentioned in your house, that is your answer: 88. If nobody has said the word "teacher" and what you want is sounds to play with, 61 is an honest choice rather than a compromise. That question has a page of its own: 61 keys or 88? How to choose.
Decision two: weighted or unweighted
"Weighted" means there is a physical hammer under each key, and the weighting is scaled — heavier in the bass, progressively lighter toward the treble, the way an acoustic piano behaves. All four of the 88-key Casios here are genuine hammer actions. Neither 61-key Casiotone is; Casio publishes no hammer or weighted-action specification for either, because the keys are sprung.
The consequence is practical, not philosophical. A player who builds hand strength on sprung keys has to rebuild it on a weighted action later. That is the argument for spending up front, and it is the one worth stretching your budget for.
There is a second, quieter axis: touch response, which is whether playing harder plays louder at all. The CT-S100 has none — the volume control sets the level and your fingers do not. Every other instrument here responds to how you play. That difference is invisible in a photo and worth checking on any keyboard at this end of the market.
Decision three: portable or a console cabinet
Both formats give you the same 88 weighted keys. What separates them is where the piano lives.
Portable — the CDP-S110 at 10.5 kg and the PX-S1100 at 11.2 kg, both 232 mm deep. One person can carry either. They sit on a table, a desk or a stand, run on six AA batteries, and can be put away. The trade is that nothing holds them up and nothing sits under your right foot unless you buy it.
Console — the PX-770, 31.5 kg, 299 mm deep, with a sliding key cover and three pedals bolted underneath. It builds once and does not move again. That permanence is the feature: three real pedals underfoot and a lid that closes are things a portable cannot give you at any price.
Slim on a matched stand — the PX-S7000, a 242 mm-deep instrument on a colour-matched wooden stand with a fixed three-pedal lyre, 28.1 kg assembled. What you buy when the piano has to be furniture and a console cabinet is not the look you want.
Decision four: what is actually in the box
This is where the money hides, and pedals are the trap.
A footswitch is not three pedals. The SP-3 supplied with the CDP-S110 and the PX-S1100 is a small on/off damper switch. It sustains, and that is all it does — there is no soft pedal, no sostenuto, and no half-pedalling, which is the partial-sustain technique graded repertoire asks for. The PX-770's three built-in pedals support half-damper; the CDP-S110 does not support half-damper at any pedal, and on the PX-S1100 half-damper works only with the optional SP-34 three-pedal unit at $129.95.
Here is what Casio actually supplies:
- CT-S100 — music stand, AC adaptor. No pedal, no case, no batteries.
- CT-S1 — music stand, strap lock, AC adaptor. No pedal, though there is a 6.3 mm jack on the back for the optional SP-20 at $87.95.
- CDP-S110 — SP-3 footswitch, music stand, AC adaptor. No floor stand.
- PX-S1100 — SP-3 footswitch, music stand, AC adaptor, and the Bluetooth adaptor. No floor stand.
- PX-770 — AC adaptor and music stand. The cabinet and pedals are the stand; there is no bench.
- PX-S7000 — the stand, the fixed three-pedal unit, a key cover, music stand, AC adaptor and the Bluetooth adaptor. No bench.
Nothing in the range includes seating. Budget for a bench or stool on every one of them, and for a keyboard stand on everything except the PX-770 and the PX-S7000.
What each step up actually buys
$217.95 → $367.95, CT-S100 to CT-S1. Touch-sensitive keys with three sensitivity levels, double the polyphony (64 against 32), Casio's AiX sound engine and a curated 61 tones, a 40,000-note MIDI recorder and a pedal jack. You give up the CT-S100's 61 auto-accompaniment rhythms and 60 songs — the CT-S1 has none at all — and battery life drops from roughly 16 hours to about three.
$367.95 → $597.95, CT-S1 to CDP-S110. This is the step from keyboard to piano: 88 hammer-weighted keys and a damper pedal in the box. It is the honest recommendation the moment lessons are involved, and no amount of good tone on an unweighted keyboard substitutes for it.
$597.95 → $947.95, CDP-S110 to PX-S1100. Polyphony goes from 64 to 192, touch sensitivity from three levels to five, and you gain dedicated 6.3 mm line outputs, an audio recorder, and Bluetooth audio and MIDI with the adaptor already in the box. Same 232 mm depth, 700 g heavier. Battery life goes the other way — about four hours against thirteen.
$947.95 → $1,027.95, PX-S1100 to PX-770. Eighty dollars, and what it buys is the cabinet: three real pedals with half-damper, a sliding key cover, and the tri-sensor action that lets you repeat a note before the key has fully returned. What you lose is portability, Bluetooth and audio recording, and 20 kg lands in your lounge room permanently. Note the arithmetic: add the CS-68P stand at $248.95 and the SP-34 to a PX-S1100 and you are past the PX-770, so choose the portable for the portability, not to save money.
$1,027.95 → $3,397.95, PX-770 to PX-S7000. More than three times the price for a genuinely different instrument: a counterweighted spruce-and-resin hybrid action, 256-note polyphony, 400 tones, a four-speaker 32 W system, a microphone input, and the stand and pedals included. Far more instrument than a first purchase needs.
Who should spend less
Spend less if nobody has committed to lessons. Two hundred dollars of keyboard that gets played beats six hundred dollars of piano that does not, and the CT-S100 is a sensible way to find out whether someone will stick with it.
Spend less if the budget is the deciding factor and the alternative is not buying at all. The CDP-S110 is the cheapest weighted 88-key Casio we stock and it is a genuine hammer action — not a compromise dressed up as one.
Spend more only where it buys something you will use. Bluetooth, 400 tones and a four-speaker system are real features, but they are not what makes a beginner progress. Weighted keys and a pedal you can actually pedal with are.
Frequently asked questions
Which Casio should I buy for a child starting piano lessons?
An 88-key weighted model. The CDP-S110 at $597.95 is the cheapest of the four on this page and gives you the two things that matter first — hammer-weighted keys and a damper pedal in the box. If pedalling technique is going to be assessed, the PX-770 at $1,027.95 is the one with three real pedals and half-damper support. Exam requirements are set by your examining board, not by us, so check their current guidance before you commit to a practice instrument.
Do any of these Casios ever need tuning?
No. Pitch is generated electronically on all of them and does not drift with humidity or season, so there is no technician's visit and no annual cost. You can shift the pitch deliberately to match another instrument on most models.
Which Casio digital pianos have Bluetooth?
The PX-S1100 and the PX-S7000, both of which include Casio's WU-BT10 wireless adaptor in the box for Bluetooth audio and MIDI. The PX-770, CDP-S110 and CT-S100 have no Bluetooth. The CT-S1 has no built-in Bluetooth either — it requires the same adaptor as an option.
Which Casio can I actually carry?
The CT-S100 at 3.3 kg and the CT-S1 at 4.5 kg are one-hand portable. The CDP-S110 at 10.5 kg and the PX-S1100 at 11.2 kg are genuinely carryable by one person. The PX-S7000 is 14.8 kg as an instrument but 28.1 kg on its stand, and the PX-770 at 31.5 kg is a two-person job that bolts together once.
Can I practise silently with headphones on any of them?
Yes, on all six — plugging in mutes the speakers. Check the socket size first: the CT-S100, CT-S1 and CDP-S110 use a 3.5 mm mini jack that ordinary headphones fit straight into, the PX-S1100 has two 3.5 mm jacks, the PX-770 has two 6.35 mm jacks that need an adapter for a 3.5 mm plug, and the PX-S7000 has one of each size.
Which of these run on batteries?
Five of the six. The CT-S100 gives approximately 16 hours on six AA cells, the CDP-S110 approximately 13, the PX-S1100 about four, the CT-S1 about three, and the PX-S7000 approximately four on eight AA cells. The PX-770 is mains-only.
What warranty do Casio instruments carry in Australia?
Casio Australia (Shriro) offers a five-year conditional warranty on Casio electronic musical instruments purchased in Australia, and a one-year conditional warranty on accessories including power adaptors, pedals, stands and carry bags. Casio's registration-based extension to ten years covers nominated Celviano and Grand Hybrid models only, so it does not apply to any instrument on this page.
Where to see them
Scarlett Music is an independent Australian retailer at 284–288 Ballarat Rd, Footscray VIC, trading since 1997, with a physical showroom and in-house technicians. Casio stock is Australian, bought through the official distributor.
Standard shipping is a $7 flat rate and free on orders over $150 — including the heavy cabinet pianos, where we absorb the freight deliberately rather than adding a bulky-item surcharge at checkout. Click & Collect from Footscray is free.