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Here's a detailed breakdown of the differences between the Yamaha NU1X and the NU1XA, based on the latest available information:
NU1X: Uses non‑contact optical fiber key sensors.
NU1XA: Upgraded to a non‑contact electromagnetic inductive (Articulation Sensor System), with dual sensors per key—one sensing the hammer, another the key’s release—for more nuanced detection and expression. (Kraft Music)
A user shared on Reddit:
"The NU1Xa uses electromagnetic sensors instead of the optical sensors used in the NU1X." (Reddit)
NU1X: Standard rear speaker grille, (16 cm + 1.9 cm) speakers ×2, (45 W + 45 W) ×2 amplifier configuration.
NU1XA: Features redesigned rear panel with four larger speaker ports, upward‑facing woofers, bidirectional horn tweeters, but slightly less total amplifier wattage: (40 W + 45 W) ×2. (Kraft Music)
NU1X: Numeric LED display with nine physical buttons—functional but limited in lighting and interactivity.
NU1XA: Modern touch-screen LCD, backlit and more intuitive, improving visibility and usability, especially in low-light conditions. (Kraft Music)
| Feature | NU1XA | NU1X |
|---|---|---|
| Voices | 28 | 15 |
| Touch Sensitivity Options | Hard2 / Hard1 / Medium / Soft1 / Soft2 / Fixed | Hard / Medium / Soft / Fixed |
| Brilliance Settings | 7 types | None |
| Recording Capacity | 250 songs, 16 tracks | 10 songs, 1 track |
| Binaural Sampling | Yamaha CFX & Bösendorfer Imperial | Yamaha CFX only (Kraft Music) |
| Piano Room Editing | Yes (lid, brilliance, touch, reverb, damper noise, string resonance, etc.) | No |
| Power Supply Design | External adapter (modern) | Integrated cord |
| Dimensions & Weight | Slightly deeper (by 1/16"), ~3 lbs lighter (~238 lbs) | Slightly less deep, a bit heavier (Kraft Music) |
Players have shared mixed impressions regarding sound and volume:
“The NU1Xa… the volume does not go up very high, with headphones or without… Sounds to me it's about half the loudness of the NU1X.” (Piano World Forums, Reddit)
“I was surprised that the volume of the NU1X both on speakers and headphones, was significantly louder… than on the new NU1XA.” (Piano World Forums)
Others appreciated the improved action and presentation, noting natural feel, better sensor design, and enhanced sound editing features. (Reddit, AZ Piano Reviews)
The AvantGrand series has included upright hybrids since 2009.
The NU1X launched in 2017; it was replaced by the NU1XA in 2023. (Wikipedia)
| Aspect | NU1X | NU1XA (New) |
|---|---|---|
| Sensor Type | Optical fiber | Electromagnetic (dual sensors) |
| Speakers & Amplifier | Traditional setup | Upward-facingwoofers, redesigned speaker ports |
| Interface | LED + physical buttons | Backlit touch-screen LCD |
| Voices | 15 | 28 |
| Recording Capacity | 10 songs, 1 track | 250 songs, 16 tracks |
| Brilliance Control | No | 7 types |
| Binaural Sampling | CFX only | CFX + Bösendorfer Imperial |
| Editable Sound Parameters (Piano Room) | None | Yes |
| Power Design | Standard power cord | External power adapter |
| Size & Weight | Slightly less deep, slightly heavier | Slightly deeper, slightly lighter |
| Release | 2017 | 2023 |
The NU1XA represents a significant evolution over the NU1X in nearly every area—sensor technology, acoustic detail, interface usability, flexibility, and user control. For players valuing expressiveness and more refined control options, the NU1XA is a compelling upgrade.
However, if maximum speaker/headphone volume is a priority—and perhaps less critical reliance on parameter adjustments—the NU1X may still offer a stronger performance in that specific area, per some user observations.
Let me know if you’d like help comparing prices, availability, or exploring how either model stacks up against other hybrid pianos!
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