The YCL-650 provides a rich, warm tone with ideal resistance. This is possible because it is crafted using some Custom model specifications that have a significant effect on tone production. Made of carefully select and seasoned Grenadilla wood and boasting an enormous amount of handcrafting and hand finishing, the 650 features tapered toneholes which are undercut by hand for precise intonation and superior tonal balance. It also features beautifully sculpted keys whose touch has been regulated by master artisans for perfect balance.