The catch
Casio PX-S1100
Leave extra room for the music rest and cables on top of the bare body.
Side by side
Casio PX-S1100 vs Casio PX-S3100: 1100 stretches the stated battery session, and 3100 adds accompaniment
Quick verdict
If your playing involves accompaniment rhythms and arranging, go with the PX-S3100. For simpler piano practice and the longer stated battery runtime, pick the PX-S1100.
Before you buy
Why, and what it costs you
Stepping up adds no body depth
Before the music rest, both are listed at 1322 by 232 by 102 mm. If you use a shallow desk, you can get the PX-S3100's 200 rhythms without giving up that body size. Stand dimensions and cable clearance still count, though the keyboard's physical footprint stays the same.
Where this comes from
Listed width: PX-S1100 1322 mm, PX-S3100 1322 mm. Depth before music rest: PX-S1100 232 mm, PX-S3100 232 mm. Accompaniment styles: PX-S1100 Not established in the checked record, PX-S3100 200. This is a conditional workflow inference drawn from these documented inputs. There is no matched performance measurement.
The catch
Casio PX-S3100
The manufacturer estimates about two hours on alkaline batteries, under its stated conditions.
Casio PX-S1100
- Why pick it
- There is no handy outlet where you practice
- The catch
- Leave extra room for the music rest and cables on top of the bare body.
Casio PX-S3100
- Why pick it
- You want accompaniment but not a deeper piano body
- Your arrangements are built on rhythm accompaniment
- The catch
- The manufacturer estimates about two hours on alkaline batteries, under its stated conditions.
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What this page compares
Casio PX-S1100 vs Casio PX-S3100, compared on keyboard mechanism, depth before music rest and preset voices, plus the practice routines that decide the better choice.
Both Casio pianos have the same bare dimensions and Smart Scaled Hammer action. Paying more mainly buys accompaniment and control, and the PX-S3100 has a shorter manufacturer battery estimate.
Which one fits
Pick the situations that sound like you
You want accompaniment but not a deeper piano body
Before the music rest, both are listed at 1322 by 232 by 102 mm. If you use a shallow desk, you can get the PX-S3100's 200 rhythms without giving up that body size. Stand dimensions and cable clearance still count, though the keyboard's physical footprint stays the same.
- Casio PX-S1100
- Good
- Casio PX-S3100
- Better fit
There is no handy outlet where you practice
On alkaline batteries, Casio rates the PX-S1100 at around four hours and the PX-S3100 at around two hours. Those are manufacturer estimates and not matched runtime tests. Even so, if you plan a session away from an outlet, the PX-S3100 calls for a more careful spare-battery plan.
- Casio PX-S1100
- Better fit
- Casio PX-S3100
- Good
Your arrangements are built on rhythm accompaniment
Compared with the PX-S1100's 18 tones and two tracks, the PX-S3100 has 700 tones, 200 rhythms and a three-track recorder. Plain hand-by-hand piano practice may never touch the extra arranging tools. If you build a backing part around chords, though, they are a practical reason to choose the 3100.
- Casio PX-S1100
- Good
- Casio PX-S3100
- Better fit
You'd like two headphone connections plus phone music
With the included wireless adapter, both give you those features. On their own they are no justification for the PX-S3100.
- Casio PX-S1100
- Good
- Casio PX-S3100
- Good
In practice
Differences you will notice
Stepping up adds no body depth
Before the music rest, both are listed at 1322 by 232 by 102 mm. If you use a shallow desk, you can get the PX-S3100's 200 rhythms without giving up that body size. Stand dimensions and cable clearance still count, though the keyboard's physical footprint stays the same.
How we worked this out
Listed width: PX-S1100 1322 mm, PX-S3100 1322 mm. Depth before music rest: PX-S1100 232 mm, PX-S3100 232 mm. Accompaniment styles: PX-S1100 Not established in the checked record, PX-S3100 200. This is a conditional workflow inference drawn from these documented inputs. There is no matched performance measurement.
The simpler model suits an afternoon away from power
On alkaline batteries, Casio rates the PX-S1100 at around four hours and the PX-S3100 at around two hours. Those are manufacturer estimates and not matched runtime tests. Even so, if you plan a session away from an outlet, the PX-S3100 calls for a more careful spare-battery plan.
How we worked this out
Manufacturer battery estimate: PX-S1100 About 4 hours under manufacturer conditions, PX-S3100 About 2 hours under manufacturer conditions. Battery operation: PX-S1100 Yes, PX-S3100 Yes. This is a conditional workflow inference drawn from these documented inputs. There is no matched performance measurement.
Extra sounds pay off only if you use the arranging workflow
Compared with the PX-S1100's 18 tones and two tracks, the PX-S3100 has 700 tones, 200 rhythms and a three-track recorder. Plain hand-by-hand piano practice may never touch the extra arranging tools. If you build a backing part around chords, though, they are a practical reason to choose the 3100.
How we worked this out
Preset voices: PX-S1100 18, PX-S3100 700. Accompaniment styles: PX-S1100 Not established in the checked record, PX-S3100 200. Internal recorder tracks: PX-S1100 2, PX-S3100 3. This is a conditional workflow inference drawn from these documented inputs. There is no matched performance measurement.
Option A
Casio, PX-S1100
PX-S1100
With a 232 mm body depth, battery operation and two headphone sockets, this piano works in a flexible practice corner. The Amazon offer selected here is white and comes with the wireless adapter.
- Best for
- There is no handy outlet where you practice
Facts we checked
- Keyboard action: Smart Scaled Hammer
- Depth ahead of the music rest: 232 mm
- Voices preset: 18
- Accompaniment styles: The checked record does not establish them
Option B
Casio, PX-S3100
PX-S3100
Inside the same 232 mm depth as the simpler PX-S1100, the PX-S3100 fits 200 accompaniment rhythms and a three-track recorder. Dedicated outputs let you connect separate speakers.
- Best for
- You want accompaniment but not a deeper piano body
Facts we checked
- Keyboard action: Smart Scaled Hammer
- Depth ahead of the music rest: 232 mm
- Voices preset: 700
- Styles of accompaniment: 200
Spec by spec
Where they really differ
| Spec | Casio PX-S1100 | Casio PX-S3100 | In practice |
|---|---|---|---|
| Keyboard mechanism | Smart Scaled Hammer | Smart Scaled Hammer | Try out the documented mechanism before taking its name as a guarantee about feel or mechanical noise. |
| Depth before music rest | 232 mm | 232 mm | The music rest, cable route and comfortable playing clearance are all left out of bare depth. |
| Preset voices | 18 | 700 | Additional tones are of use when your playing routine calls for them, and they are not a measure of piano realism. |
| Accompaniment styles | Not established in the checked record | 200 | Arranging and play-along sessions are where accompaniment patterns count, and not every piano lesson needs them. |
| Internal recorder tracks | 2 | 3 | A large number by itself counts for less than track allocation and independent overdubbing. |
| Manufacturer battery estimate | About 4 hours under manufacturer conditions | About 2 hours under manufacturer conditions | Each manufacturer estimate rests on its own conditions, so none establishes a matched runtime. |
Trade-offs
What each pick costs you
With Casio PX-S1100
- Both USB audio-file recording and Bluetooth use the same USB-A socket, so work out your connection plan.
With Casio PX-S3100
- The included switch will not do half-pedaling. For that you need the optional SP-34.
Change of plan
When the answer changes
There is no handy outlet where you practice
Go with Casio PX-S1100. On alkaline batteries, Casio rates the PX-S1100 at around four hours and the PX-S3100 at around two hours. Those are manufacturer estimates and not matched runtime tests. Even so, if you plan a session away from an outlet, the PX-S3100 calls for a more careful spare-battery plan.
You want accompaniment but not a deeper piano body
Go with Casio PX-S3100. Before the music rest, both are listed at 1322 by 232 by 102 mm. If you use a shallow desk, you can get the PX-S3100's 200 rhythms without giving up that body size. Stand dimensions and cable clearance still count, though the keyboard's physical footprint stays the same.
You need a verified winner on mechanical key noise or on personal playing comfort
Neither model fits. Manufacturer records contain no matched test for those outcomes. Try the instruments under the conditions you intend to play in.
Decision guide
How to decide
Stepping up adds no body depth
Before the music rest, both are listed at 1322 by 232 by 102 mm. If you use a shallow desk, you can get the PX-S3100's 200 rhythms without giving up that body size. Stand dimensions and cable clearance still count, though the keyboard's physical footprint stays the same.
The simpler model suits an afternoon away from power
On alkaline batteries, Casio rates the PX-S1100 at around four hours and the PX-S3100 at around two hours. Those are manufacturer estimates and not matched runtime tests. Even so, if you plan a session away from an outlet, the PX-S3100 calls for a more careful spare-battery plan.
Extra sounds pay off only if you use the arranging workflow
Compared with the PX-S1100's 18 tones and two tracks, the PX-S3100 has 700 tones, 200 rhythms and a three-track recorder. Plain hand-by-hand piano practice may never touch the extra arranging tools. If you build a backing part around chords, though, they are a practical reason to choose the 3100.
What this page can’t tell you
- This comparison rests on documented specifications and conditional reasoning about your setup. We have not put key feel, mechanical noise or speaker performance side by side and measured them.
- The dimensions given are for the specified body or cabinet. Allow space as well for the rest, cables, bench and player.
- Before you order, verify the exact Amazon model, color, supplied accessories, condition and delivery date.
By the numbers
What the data shows
What we found across the digital pianos we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Casio PX-S1100 |
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| |
| Casio PX-S3100 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Casio PX-S1100
There is no handy outlet where you practice
See price & reviews on AmazonCasio PX-S3100
You want accompaniment but not a deeper piano body
See price & reviews on AmazonEach link opens in a new tab.
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