Which Scenario Sounds Like You?
Two people, two different evenings with a piano.
The first opens a piece of sheet music — maybe some Chopin, maybe a Beethoven sonata they've been working through for weeks — and wants the keys to respond the way an upright piano responds. The piano is the instrument, and they're trying to master it.
The second sits down, pulls up a jazz backing track, and wants the piano to feel like the front of a small band. Maybe they play at their church on Sundays, or they're building a café setlist. Musical variety is the point.
If the first scenario is you, the Roland FP-30X was built for you. If the second is you, that's the Yamaha DGX-670. The reason this comparison matters is that many buyers arrive thinking the DGX-670 is simply a better FP-30X because it costs more and has more features. It isn't. It's a different instrument for a different kind of musician.
The FP-30X: When Piano Is the Point
The FP-30X uses Roland's PHA-4 Standard action — a step above anything Yamaha offers in this price range. There's a subtle tactile feedback partway through each key stroke, meant to replicate the sensation of a grand piano hammer releasing, that helps you develop nuanced touch control over time. The DGX-670's GHS action is Yamaha's most basic weighted keyboard: less resistance, shorter key travel. The DGX-670's own editorial is candid that for classical technique training, GHS is a compromise. The PHA-4 is genuinely building better habits.
The 56 sounds powered by Roland's SuperNATURAL piano modeling work differently from a large sample library. Rather than replaying recorded notes, SuperNATURAL models how a grand piano's strings physically respond to each touch. The result isn't more sounds — it's a more living piano sound that rewards expressive playing. For someone focused on piano practice, this is more valuable than 600 additional timbres you'll probably never use.
For late-night practice, the FP-30X has Headphones 3D Ambience spatial processing; the DGX-670 has no headphone optimization at all. That daily quality-of-life gap adds up fast for anyone who practices while the household is asleep.
One more counterintuitive point: the FP-30X has both Bluetooth Audio and Bluetooth MIDI. The DGX-670 has Bluetooth MIDI only. If you want to stream music from your phone through the DGX-670's speakers while you practice, you need a cable. The cheaper instrument has more connectivity.
The DGX-670: When Music Is Bigger Than Piano
All of that said, the DGX-670 does something the FP-30X simply cannot: it turns one person into a band.
The 630 sounds span organs, strings, synths, brass, and full ensemble patches. The auto-accompaniment system generates a live-feeling rhythm section — bass, drums, harmonic fills — in styles from jazz to Latin to gospel to pop. For a musician who plays at a church, performs solo gigs, or composes across genres, these features are genuinely useful in a way that no amount of piano-practice framing changes. The DGX-670 also has 260 preset songs and a wider, deeper footprint (1397mm × 445mm versus the FP-30X's 1300mm × 284mm) — it's closer to a compact console than a slim portable.
The Misconception That Misleads Most Buyers
More features does not mean better piano. The DGX-670's 630 sounds don't make it a superior FP-30X — they make it a different product for a different purpose. If your goal is learning piano, the extra $200 for the DGX-670 buys you arranger functionality, not a better piano. It buys you a less capable action at a higher price.
The caveat worth naming: many beginners think they want to learn classical piano but actually want to play songs and have fun — and there's nothing wrong with that. If you want to sit down after dinner and play along with music you love, the DGX-670 serves that life well. The mistake is buying it expecting it to also be the best tool for building serious piano technique.
How to Know Which One Is Yours
If you want to learn piano as an instrument — with a teacher, through a method, toward real repertoire — the Roland FP-30X is your answer. Better action, better headphone practice, more Bluetooth connectivity, and a piano sound that rewards expressive playing, all for less money.
If you want to make music across styles, perform with accompaniment, or need a versatile one-instrument band — the Yamaha DGX-670 is your instrument. Its arranger features are genuinely fun, and for church gigs, café performances, or genre exploration, they're the right tool.
The question isn't which piano is better. It's which kind of musical life you're living.