Casio PX-S3100 vs Yamaha P-225
Both sit near $900-999, but they are different instruments: the P-225 is a 24-sound portable piano, while the PX-S3100 packs 700 tones, 200 styles, 100 arpeggiator types and a recorder into the same slim chassis. Portability is a draw at 11.4 kg against 11.5 kg.
| Casio PX-S3100 | Yamaha P-225 | |
|---|---|---|
| Key action | Smart Scaled Hammer Action | Graded Hammer Compact (GHC) |
| Polyphony | 192 | 192 |
| Sounds / presets | 700 | 24 |
| Accompaniment styles | 200 | — |
| Sequencer | Yes (MIDI recorder: 5 songs / 3 tracks) | — |
| Speakers | 16 W | 14 W |
| Bluetooth | Yes | Yes |
| USB audio | Yes | Yes |
| Weight | 11.4 kg | 11.5 kg |
| Released | 2021 | 2024 |
| Status | current | current |
| Keys | 88 | 88 |
| Category | digital-piano | — |
| Arpeggiator | 100 types | — |
| Knobs | 2 | — |
Which one should you buy?
- Choose the Yamaha P-225 if budget is the priority — it is about $100 cheaper (approx.).
- Choose the Casio PX-S3100 if lighter to carry to gigs and lessons (11.4 kg vs 11.5 kg).
- Choose the Casio PX-S3100 if you want more variety of built-in voices (700 vs 24).
- Choose the Casio PX-S3100 if you practise out loud without an amp (16 W vs 14 W).
Casio PX-S3100
The PX-S3100 is for players who want more than a piano: 700 tones, 200 accompaniment styles, a pitch-bend wheel and a MIDI recorder, at 11.4 kg.
Yamaha P-225
The P-225 is the purer piano: VRM Lite, Bluetooth audio and USB audio with 192-note polyphony on the GHC keyboard, and 24 sounds instead of 700.
Full spec sheets: Casio PX-S3100 · Yamaha P-225. Rows with a highlighted background differ.