Main trade-off
Roland FP-30X
Its flash-drive audio playback does not make it a stand-alone WAV recorder. The full 321-tone selection uses the Roland Piano App.
Head-to-head
Roland FP-30X vs Casio PX-S3100: Roland records into a computer, Casio records WAVs with Bluetooth unplugged
The short answer
Choose FP-30X if you record into a computer and want direct USB audio alongside Roland’s piano-led controls. Choose PX-S3100 if you want accompaniment styles and WAV recording without a computer, or battery power away from an outlet. Roland can play audio files from a flash drive, but its saved performances are MIDI. Casio records WAV files to a drive, with its Bluetooth adapter unplugged from that shared port.
Before you choose
The reasoning and the trade-offs
A USB stick does not guarantee a recording you can send to family
FP-30X plays WAV and MP3 files from a flash drive, but it saves your own performance as MIDI. If the goal is an audio file to share without opening a computer, Casio’s WAV recorder is the relevant advantage. If you already record into a computer, Roland’s USB audio carries the piano sound directly. Casio instead needs an analog audio-input route for live capture, or a file transfer after recording to the drive. Choose the piano around the handoff you want at the end of practice.
What this is based on
Roland support explicitly distinguishes MIDI saving from computer-based audio recording. Casio specifies flash-drive WAV recording and computer USB-MIDI. MIDI playback through another sound engine is not capture of the original piano sound.
Main trade-off
Casio PX-S3100
Flash recording and the Bluetooth adapter share a port. Its computer USB-MIDI connection does not carry the piano’s internal sound as audio.
Roland FP-30X
- Choose it for
- You use a computer for recording and want the piano’s own audio sent directly over USB.
- You want Bluetooth play-along and two headphone sockets, with 56 tones accessible from the front panel.
- Main trade-off
- Its flash-drive audio playback does not make it a stand-alone WAV recorder. The full 321-tone selection uses the Roland Piano App.
Casio PX-S3100
- Choose it for
- You want a WAV performance file without a computer and can free the USB-A port by removing the Bluetooth adapter.
- You want built-in accompaniment or AA battery operation, rather than relying on an app or nearby outlet for those jobs.
- Main trade-off
- Flash recording and the Bluetooth adapter share a port. Its computer USB-MIDI connection does not carry the piano’s internal sound as audio.
About this comparison
FP-30X or PX-S3100 for lessons and recording? Separate USB playback from audio recording, check app-dependent sounds and decide whether battery power matters.
Both are portable weighted-key pianos with speakers, two headphone sockets and Bluetooth play-along features. The cross-shop is piano-led home practice with computer recording versus a more self-contained arranging and recording setup.
Winner by situation
Start with what you need it to do
Record live piano audio into a computer without a separate interface
Roland supplies USB audio. Casio’s computer USB connection is MIDI.
- Roland FP-30X
- Better fit
- Casio PX-S3100
- Caution
Record a WAV file without opening a computer
Casio records audio to a flash drive with the Bluetooth adapter removed.
- Roland FP-30X
- Caution
- Casio PX-S3100
- Better fit
Use accompaniment without borrowing the household phone
Casio has onboard accompaniment. Roland’s broader tone selection depends on the app.
- Roland FP-30X
- Good
- Casio PX-S3100
- Better fit
Both teacher and student listen through wired headphones
Both have two headphone sockets and a side-by-side teaching mode.
- Roland FP-30X
- Good
- Casio PX-S3100
- Good
What matters in practice
The differences that matter
A USB stick does not guarantee a recording you can send to family
FP-30X plays WAV and MP3 files from a flash drive, but it saves your own performance as MIDI. If the goal is an audio file to share without opening a computer, Casio’s WAV recorder is the relevant advantage. If you already record into a computer, Roland’s USB audio carries the piano sound directly. Casio instead needs an analog audio-input route for live capture, or a file transfer after recording to the drive. Choose the piano around the handoff you want at the end of practice.
How we reached this conclusion
Roland support explicitly distinguishes MIDI saving from computer-based audio recording. Casio specifies flash-drive WAV recording and computer USB-MIDI. MIDI playback through another sound engine is not capture of the original piano sound.
A sound count can hide who needs the household phone
If a child practices while the shared phone is being used elsewhere, Roland’s 321-tone headline is not the front-panel selection. The current specification lists 56 tones at the piano and the full 321 through the app. Casio offers its tones and accompaniment through its own controls. That makes Casio more self-contained for experimenting with arrangements. It does not establish better piano sound. If ordinary piano practice is the job, Roland’s smaller direct selection may already be plenty, and both can provide two wired headphone connections.
How we reached this conclusion
Current Roland specification separates front-panel and app tone counts. Casio documents onboard tones, rhythms and controls. No prediction about learning quality or sound preference.
Casio’s computer-free features still ask you to choose a connection
You can move PX-S3100 away from an outlet using batteries and record to a flash drive without a computer. If the plan also includes a Bluetooth backing track, the WU-BT10 adapter needs the same port as that drive. Use wired Audio In for the source device instead, with the correct cable or phone adapter. FP-30X keeps Bluetooth built in, but its audio-recording workflow needs a computer and its power comes from AC. Neither gives you every part of an outlet-free, Bluetooth-backed WAV session in the same way.
How we reached this conclusion
Casio battery supply, USB-A sharing and Audio In compared with Roland AC supply, built-in Bluetooth and computer-based audio recording. No assertion that backing-track audio is included in the recorded file.
Choice A
Roland, FP-30X
FP-30X
You use a computer for recording and want the piano’s own audio sent directly over USB.
- Best matched use
- You use a computer for recording and want the piano’s own audio sent directly over USB.
Checked facts
- Recording destination: USB audio into a computer, internal MIDI recorder
- What a USB stick does: Plays WAV/MP3 and saves MIDI performances, 32 GB limit
- Sounds without an app: 56 front-panel tones, 321 through Roland Piano App
- Bluetooth during flash recording: Built-in Bluetooth, but no stand-alone WAV recorder
Choice B
Casio, PX-S3100
PX-S3100
You want a WAV performance file without a computer and can free the USB-A port by removing the Bluetooth adapter.
- Best matched use
- You want a WAV performance file without a computer and can free the USB-A port by removing the Bluetooth adapter.
Checked facts
- Recording destination: WAV to USB flash drive, internal MIDI recorder
- What a USB stick does: Records and plays WAV audio as well as MIDI
- Sounds without an app: 700 tones, with 200 built-in accompaniment rhythms
- Bluetooth during flash recording: WU-BT10 must leave USB-A for the flash drive
Meaningful differences
What changes the fit
| What changes | Roland FP-30X | Casio PX-S3100 | Why it matters |
|---|---|---|---|
| Recording destination | USB audio into a computer, internal MIDI recorder | WAV to USB flash drive, internal MIDI recorder | A computer-based studio and a stand-alone audio file call for different connections. |
| What a USB stick does | Plays WAV/MP3 and saves MIDI performances, 32 GB limit | Records and plays WAV audio as well as MIDI | Audio playback support is not proof of audio recording support. |
| Sounds without an app | 56 front-panel tones, 321 through Roland Piano App | 700 tones, with 200 built-in accompaniment rhythms | If the household phone is unavailable during practice, compare the controls on the actual piano. |
| Bluetooth during flash recording | Built-in Bluetooth, but no stand-alone WAV recorder | WU-BT10 must leave USB-A for the flash drive | Casio’s wired Audio In is the alternate play-along route when that USB port is occupied. |
| Power away from the usual spot | AC adapter | AC adapter or six AA batteries | Casio can move practice away from an outlet, with battery runtime dependent on use. |
| Quiet shared practice | Two headphone sockets and Twin Piano | Two headphone sockets and Duet | Both cover two wired listeners. Bluetooth reception is not a promise of Bluetooth-headphone output. |
What you give up
Every choice has a cost
If you choose Roland FP-30X
- Moving practice away from the usual spot still needs AC power. This model has no battery-powered workflow.
If you choose Casio PX-S3100
- The battery option does not guarantee an evening of playing. The published roughly two-hour figure uses continuous demo playback.
Recommendation switch
The decision flips if...
Your recordings are made in computer music software
Choose Roland FP-30X. USB audio supplies the piano sound directly.
A stand-alone audio file and onboard accompaniment matter more
Choose Casio PX-S3100. Casio supplies both, with the shared USB-port limit.
What matters in practice
Before you choose
You want plenty of sounds and recordings without making practice depend on a phone or laptop. Casio puts more of that work inside the piano, while Roland’s direct USB audio is useful when a computer is already part of the plan.
What this comparison cannot tell you
- No tested key-feel, sound-quality or acoustic key-noise winner is claimed.
- Neither Bluetooth play-along feature establishes wireless-headphone support. Use the documented wired headphone connections.
What the facts say
What the comparison shows
Useful conclusions from the current digital pianos comparison, followed by the checked facts used to reach them.
See the checked facts and calculation notes
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Roland FP-30X |
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| Casio PX-S3100 |
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Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Roland FP-30X
You use a computer for recording and want the piano’s own audio sent directly over USB.
You want Bluetooth play-along and two headphone sockets, with 56 tones accessible from the front panel.
See price & reviews on AmazonCasio PX-S3100
You want a WAV performance file without a computer and can free the USB-A port by removing the Bluetooth adapter.
You want built-in accompaniment or AA battery operation, rather than relying on an app or nearby outlet for those jobs.
See price & reviews on AmazonLinks open in a new tab.