Yamaha designs and manufactures its soundboards, frames, keyboard actions, and other piano parts with unwavering reliability and under the strictest quality control. All parts are assembled by skilled craftsmen to create a thoroughly balanced piano that combines Yamaha's uniquely pure sound quality with excellent performance. The result is a high level of expressiveness that responds faithfully even to those who are just playing the piano for the first time.

The JU/JX series was designed with an emphasis on compactness in every aspect—height, width and depth. The JU109 have been constructed with special care and detailed attention to each, and the compact size (a height of 109 cm) makes them ideal for limited spaces. The JX113T and JX113CP have a height of 113 cm, giving it a more expressive sound.