Yamaha U1 Acoustic Upright Piano is a redesigned Japan made U1 in the 2000s. Thanks to comprehensive redesign, these world-standard instruments are better than ever, with numerous advances in materials and construction. Refined scale designs and components improve tonal performance, while other modifications enhance strength and durability. And the top-of-the-line sets extraordinary standards of elegance and excellence, incorporating concepts adapted from Yamaha grand pianos.
- Built in soft closed fallboard
- Lathe cut and nickel plated tuning pins compared to cheaper blued steel tuning pins found in older U1
- Red underfelted hammers, which is made of much harder, more durable wool, and of a different shape to provide optimum tone production, response and long term durability. (notice the more substantial shape of the hammer head in the pictures)
- 69 dampers, increased from the 66 dampers used previously. This advancement was made to improve the overall quality of sound of the piano.
- 5 backposts compared to most older models which had only 4. Backposts improve rigidity, resonance and structural stability. Additionally, the new model has tone collector bolts, connecting the backpost to the iron frame to further increase stability and tonal quality.
- ‘Perimeter’ type iron frame and redesigned bass bridge, to allow longer bass strings than in the older models. This significantly improves the depth and the purity in the sound of the bass, as the newer iron frame utilizes a circumference design that holds the piano string tension much better, and also improves the piano’s backpost balance.
- “Curved” bass bridge design, which is more advanced and costly, that provides for a purer tone in the bass than in earlier models that have straight bass bridges. A curved bass bridge provides for longer strings and a richer bass sound.
- Laminated wood bridge (which holds secure and elevates the strings from the soundboard) same as those bridge is used in higher-end grand pianos. Laminate (which are thin layers of wood glued together) is significantly stronger and longer lasting than the block of wood that was utilized for the bridge of older models.
- Tone collector bolts help secure the backpost to the iron frame and increase stability and tonal quality. In addition to adding the extra backpost to new model Yamahas, to further increase a pianos’ stability and tonal quality, all newer model Yamahas have tone collector bolts. Older models, including the U1 has no tone collector bolts at all.
- Improved rib configurations that add strength to the soundboard while improving the tone. Since 1999, the U1 and U3 models have been built with thicker and wider ribs, using the same spec as the U5. The stronger ribs hold the crown shape of the soundboard much firmer against the pressure of the strings.
- Brass castor wheels which is aesthetically more attractive than the steel used in older models.