1st Note

Casio

Casio PX-S1100 Review

The world's slimmest 88-key digital piano

MSRP

$700

Source: Sweetwater product page (manufacturer site unavailable) (2025-04-06)

88 Keys 11.2 kg smart scaled hammer action Bluetooth Beginner

Scores

8.4 4.5 7.0 7.3 6.5 Beginner Night Practice Portability Touch Reality Value

Beginner

8.4

Night Practice

4.5

Portability

7.0

Touch Reality

7.3

Value

6.5
How These Scores Were Calculated

Beginner

8.4
Factor This Piano Points
Base Score 3.0
Lesson Function No +0
App Connectivity Yes +1.5
Recording Yes +1
Metronome Yes +0.5
Transpose Yes +0.3
Layer / Split Yes +0.3
Preset Songs 60 +1.5
Sound Variety 18 sounds +0.3

Night Practice

4.5
Factor This Piano Points
Base Score 2.0
Headphone Jacks 1 +1
Headphone Type 3.5mm +0.5
Headphone Optimization No +0
Key Action Quietness smart scaled hammer action +0
Volume Control Yes +1
Bluetooth Audio No +0

Portability

7.0
Factor This Piano Points
Base Score 5.0
Weight 11.2 kg +1
Width 1322 mm -0.5
Battery Yes +1.5
Foldable No +0
Key Count 88 keys +0

Touch Reality

7.3
Factor This Piano Points
Key Action Quality smart scaled hammer action (grade 6) +3.6
Key Count 88 keys +1.5
Polyphony 192 notes +1.2
Sound Modeling Multi-dimensional Morphing AiR +0.5
Key Surface simulated-ebony-ivory +0.5

Our Verdict

If you want a piano that fits your life rather than the other way around — sitting on a desk, running on batteries, tucked away in a closet — the PX-S1100 makes it possible without compromising on key quality.

Pros

  • Ultra-slim design — only 102mm deep, fits anywhere
  • Battery powered (6×AA) — true portability
  • Smart Scaled Hammer Action with ivory/ebony texture
  • 192-note polyphony with Multi-dimensional Morphing AiR
  • Bluetooth MIDI for Chordana Play app
  • Touch-sensitive front panel controls

Cons

  • Single 3.5mm headphone jack
  • No Bluetooth audio (only MIDI)
  • Bluetooth requires optional adapter (WU-BT10)
  • No built-in lesson function

The PX-S1100 is for people who thought they didn't have room for a piano. It's thinner than most laptops are wide, light enough to carry in one hand, and runs on AA batteries. But unlike most ultra-portable instruments, it doesn't feel like a toy — the keys have real weight and the sound has genuine depth. You'll pay more than the CDP-S110, but the better key feel, richer sound, and battery capability make it worth the step up.

Technical Deep Dive

About the Key Action

The keys feel noticeably better than budget Casio models. Each key has its own individual weight, so the bass feels heavy and authoritative while the treble feels light and responsive. The white keys have a subtle ivory-like texture and the black keys feel like smooth ebony — both designed to keep your fingers from slipping and make playing feel more natural.

Who Is This Piano For?

You want a full piano but your living situation demands flexibility. Maybe you practice at the kitchen table and put the piano away before dinner. Maybe you bring it to the sunroom on weekends. Or maybe you simply don't have a permanent spot for an instrument. The battery power means you can play anywhere — even on the patio — without an outlet.

Specifications

Keys 88
Key Action Smart Scaled Hammer Action
Polyphony 192 notes
Sounds 18
Weight 11.2 kg
Speakers 16W (×2)
Bluetooth MIDI

Recommended Accessories

🪑

Stand

Stand not included (sold separately)

A sturdy X-stand or furniture-style stand is essential if one isn't included.

🎧

Headphones

Closed-back headphones with good bass response make practice sessions more enjoyable.

🎹

Sustain Pedal

The included pedal is usually basic. A half-damper pedal upgrade is worthwhile for expressive playing.

💺

Bench

An adjustable-height bench helps maintain proper posture during long practice sessions.

Where to Buy

Casio PX-S1100 $700

How It Compares

PX-S1100 vs FP-10

The PX-S1100 scores higher in Portability. The FP-10 costs $200 less. Choose the PX-S1100 if you prioritize portability.

Roland FP-10 →

PX-S1100 vs CDP-S360

The PX-S1100 scores higher in Portability and Touch Reality. The CDP-S360 costs $150 less. Choose the PX-S1100 if you prioritize portability.

Casio CDP-S360 →

PX-S1100 vs XE20

The PX-S1100 scores higher in Portability and Touch Reality, while the XE20 edges ahead in Night Practice. Choose the PX-S1100 if you prioritize portability.

Korg XE20 →

Frequently Asked Questions

Is the Casio PX-S1100 good for beginners?

Yes. The Casio PX-S1100 scores 8.4/10 on our Beginner scale, which means it has strong learning features like lesson modes, app connectivity, and built-in songs to help new players get started.

Does the Casio PX-S1100 have Bluetooth?

The Casio PX-S1100 has Bluetooth MIDI for wireless app connectivity, but no Bluetooth Audio for streaming music.

How heavy is the Casio PX-S1100?

The Casio PX-S1100 weighs 11.2 kg (25 lbs). It scores 7/10 on our Portability scale. This is light enough to carry between rooms or to lessons.

Can I use headphones with the Casio PX-S1100?

Yes. The Casio PX-S1100 has 1 headphone jack (3.5mm). It scores 4.5/10 on our Night Practice scale.

How many keys does the Casio PX-S1100 have?

The Casio PX-S1100 has a full 88-key keyboard, the same as an acoustic piano. This gives you the complete range for any piece of music.

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