Casio PX-S3100 review

Model overview

Think about a complete session rather than the number of presets. If you want to start with a piano, add a bass part, practise against a rhythm and save a performance, this instrument addresses a different job from a basic home piano. If you will always select one grand-piano sound and leave it there, compare simpler alternatives first. The extra capability earns its place only when you can reach it comfortably. Plan the stand, case and cables alongside the instrument so its slim body delivers a practical carrying advantage.

Keyboard action

MusicRadar finds the action responsive but less natural than rivals such as the Roland FP-30X. Piano Buyer’s Stephen Fortner is much more enthusiastic about the expression he could achieve after a month with the instrument, from delicate playing to forceful passages. PianoDreamers finds the compact mechanism usable while acknowledging the debate over uneven perceived key weight. Those judgments should remain separate. Our audition suggestion is a quiet phrase containing black keys, followed by repeated notes and a chord voiced from farther back on the keys. Listen for your intended balance rather than trying to reproduce somebody else’s preference.

Sound and speakers

MusicRadar hears a clear speaker improvement over the PX-S3000. Fortner is particularly impressed by the bass and usable volume, while PianoDreamers calls the improvement modest and still hears limitations when pushed. We would not promise that the built-in speakers can cover your venue from those reports. Try the piano at practice volume, then compare external amplification if performing is part of the plan. For home use, listen from your seated position as well as across the room. Strong sound in front of an audience and satisfying sound at the bench are not necessarily the same requirement.

Controls and live use

PianoDreamers welcomes the screen but dislikes the lack of tactile feedback and the effort needed for deeper editing. Its reviewer noticed fingerprints on the glossy panel. Andertons’ demonstration also draws attention to that finish, while illustrating a wireless MIDI connection to an iPad. We reviewed the transcript, not the audio as a listening test. Before buying, build and recall a piano-plus-bass setup, adjust a layer and return to a plain piano. If those are performance tasks for you, practise them while keeping time rather than stopping between each menu choice.

Accompaniment and registrations

The useful question is whether the backing follows the chords you actually play. Pick one familiar song and try its inversions, pauses and ending rather than cycling through dozens of styles. Then save the complete setup and recall it after changing sounds. Casio documents 96 registrations, which can reduce repeated preparation once you learn what each setup stores. Our recommendation is to build a small dependable set before exploring the entire library. A keyboard with fewer sounds that you can operate confidently may be more useful than an ambitious arrangement you cannot recover quickly.

Recording and connectivity

There are two distinct recording paths: editable MIDI performances and WAV audio saved to a USB drive. The latter does not turn the USB-B connection into a computer audio interface. A computer session using the piano’s own sound needs an appropriate audio connection. The included Bluetooth adapter and a recording drive also use the same USB-A port, so plan which function the session requires. The dedicated line outputs and two headphone sockets are useful practical provisions. Test your intended lesson or recording setup end to end before assuming that connecting one cable handles every signal.

Owner evidence and limits

The retrieved Sweetwater page shows 12 reports, including some focused largely on retailer service. Several describe portability and performing use positively; one specifically reports six months of gigs. Similar names and locations recur, so the entries should not be treated as 12 independent long-term owners. On Reddit, a six-month owner prefers the Casio’s feel and carrying convenience to a DGX-670 but prefers the Yamaha speakers. Another discussion includes a dissatisfied buyer who resold a unit after a few weeks. These accounts help identify audition questions; they do not establish a defect rate or universal sound verdict.

Pedals batteries and setup

The supplied SP-3 is a basic switch. Casio documents half-damper operation with the optional SP-34 three-pedal unit; do not assume that any pedal plugged into a normal jack provides the same behavior. A separate expression connection may matter for sounds whose level you want to change while playing. Casio estimates about two hours on six AA alkaline batteries, with actual use varying. Treat that as a planning limit rather than a guaranteed set length. Include a reliable power plan and a compatible stand before relying on battery portability for a performance.

Pricing

USD 999.99 observed price (checked 2026-10-29). Confirm current price and availability. — The Sweetwater U.S. page retrieved on October 29, 2026 displayed $999.99 and in-stock status for the instrument. This is a dated retail observation, not MSRP or a guaranteed checkout price. Historical reviews and old sale articles quote different figures; those offers should not be carried forward as current. Check the included adapter, stand and pedal contents, then compare the delivered total. A lower bare-piano price can disappear once a carrying case or furniture package is added. See the key specifications table below for the same price reference and related facts.

Tradeoffs and conclusion

The Casio PX-S1100 keeps the slim piano approach with fewer sounds and a simpler control surface; the S3100 makes more sense when its accompaniment and editing tools will be used. The Yamaha DGX-670 offers a larger instrument and a different recording workflow, so compare carrying needs and controls as carefully as the sound. The Roland FP-E50 is another relevant accompaniment alternative. For an existing PX-S3000 owner, identify a specific improvement before replacing a working instrument. For a new buyer, the S3100’s strongest case is combining several useful jobs in a body you can accommodate and an action you enjoy.

Sources and research

• Casio U.S. PX-S3100 specifications — manufacturer
• Casio PX-S3100 user guide — manufacturer
• Casio global announcement, July 7, 2021 — manufacturer
• MusicRadar: Matt Mullen review — independent review
• Piano Buyer: Stephen Fortner, a month with PX-S3100 — independent review
• PianoDreamers: PX-S3100 hands-on review — independent review
• Andertons PX-S3100 demonstration (transcript reviewed) — dealer demo
• Sweetwater: dated U.S. listing and customer reports — owner reviews
• Reddit: PX-S action preferences and one returned-unit report — community
• Reddit: six-month PX-S3100 owner comparing a DGX-670 — community

Plan your next step

• Set a complete piano budget
• Understand weighted keys
• Compare portable and console setups
• Browse published reviews
• Compare model specifications