A slim Privia focused on piano playing, with battery operation and a useful set of connections.
Who I would put this on the shortlist for
A home player who wants a small footprint, or a player transporting the piano regularly. Try the action at the back of the keys as well as near the front before choosing on size alone.
What to check before buying
Bluetooth depends on the included WU-BT10 adapter, so confirm that it is present in a used or open-box purchase. Recording audio to a USB stick is not the same feature as streaming USB audio into a computer.
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Listed by the manufacturer for the US market when checked; dealer stock, finishes, bundles and regional features must be confirmed before purchase.
From the service side
My technician’s perspective
Ownership advice — not an exact-model repair report
This entry is based on published specifications and practical ownership considerations. No exact-model, first-hand repair case is being claimed here. For a problem with a Casio you already own, send me the full model number, what the instrument does, and whether the symptom occurs through headphones as well as the speakers.
Casio PX-S1100 specifications
Manufacturer specifications unless a source states otherwise. Unknown details stay unverified. Model and finish variants may differ.
- Number of keys
- 88
- Keyboard action
- Smart Scaled Hammer Action
- Piano sound engine
- Multi-dimensional Morphing AiR
- Maximum polyphony
- 192
- Voices / tones
- 18
- Amplifier output
- 8 W × 2
- Weight (manufacturer configuration)
- 11.2 kg; without batteries
- Dimensions: W × D × H
- 1322 × 232 × 102 mm
- USB MIDI
- Yes — USB-B
- USB audio interface to a computer
- Not listed — USB MIDI and flash-drive audio are distinct
- Bluetooth audio input
- Yes — via included WU-BT10 adapter
- Bluetooth MIDI
- Yes — via included WU-BT10 adapter
- 5-pin DIN MIDI
- No
- Dedicated line outputs
- 6.35 mm L/Mono and R
- Headphone sockets
- 2 × 3.5 mm stereo
- Pedals and half-pedaling
- SP-3 included; optional SP-34 three-pedal / half-damper
- Onboard recording
- 2-track MIDI; USB-drive WAV recording
- Battery operation
- Yes — 6 AA batteries
- Included / optional setup
- WU-BT10 and SP-3; CS-68P stand optional
- Other useful features
- Not verified
Related advice and repair articles
Sources and scope
Technical data checked 2026-09-22. This is an editorial buying guide, not a laboratory test or a measured reliability study. No exact-model repair is implied unless identified above.
- Casio specifications and product information (manufacturer)
