Comparison
Casio PX-S3100 vs Casio PX-S1100
These share the Smart Scaled Hammer Action family and similarly slim dimensions. Choose the PX-S3100 for the work beyond ordinary piano playing: its larger sound library, accompaniment, display, assignable controls and expanded MIDI recorder. The PX-S1100 may be sufficient if your routine is mainly one piano sound with occasional layers. Both have dedicated outputs, two headphone sockets and the included Bluetooth adapter. A larger sound count does not mean a higher action tier. Try the same passage on each, then perform your normal settings changes. Compare complete current packages rather than mixing an old price observation with a new offer.
Open this pair in the interactive comparison
| Feature | PX-S3100 | PX-S1100 |
|---|---|---|
| Price reference | USD 999.99 observed price (checked 2026-10-29). Confirm current price and availability. Instrument only; finish, tax, accessories, delivery and assembly may affect the total. | USD 729.99 historical observed price (checked 2026-09-25). Current price needs checking; excluded from budget matching. Instrument only; finish, tax, accessories, delivery and assembly may affect the total. |
| Best-fit buyer | Players carrying a piano between home, rehearsals and small performances; Songwriters who want accompaniment, layered sounds and sound shaping in one instrument; Buyers who want a slim Casio with more direct control than the PX-S1100 | Small rooms and apartments; Players who need an easy-to-move 88-key piano |
| Keyboard action | Smart Scaled Hammer Action Keyboard | Smart Scaled Hammer Action |
| Key construction | Not verified | Not verified |
| Key surface | Simulated ebony and ivory textures | Not verified |
| Escapement / let-off | Not verified | Not verified |
| Maximum polyphony | 192 | 192 |
| Piano sound technology | Multi-Dimensional Morphing AiR | Multi-Dimensional Morphing AiR |
| Speakers | 16 x 8 cm oval x 2 | 16 × 8 cm oval × 2 |
| Amplification | 8 W x 2 | 8 W × 2 |
| Pedals | SP-3 supplied; SP-34 optional; separate expression/assignable pedal input | SP-3 included; optional SP-34 three-pedal unit supports half-damper |
| Bluetooth audio | Via included WU-BT10 adapter | Yes, via included WU-BT10 adapter |
| Bluetooth MIDI | Via included WU-BT10 adapter | Yes, via included WU-BT10 adapter |
| USB audio interface | No | Not verified |
| USB MIDI | Yes | Yes |
| Line outputs | Yes | 6.35 mm L/Mono and R |
| Headphones | Two 3.5 mm stereo sockets | 2 × 3.5 mm stereo |
| Dimensions (mm) | 1322 W x 232 D x 102 H; music rest detached | 1322 W × 232 D × 102 H (without music stand) |
| Weight (kg) | 11.4 | 11.2 |
| Apps | Casio Music Space | CASIO MUSIC SPACE |
| Warranty | Not verified | Not verified |