Newly designed, highly polished bore
The new bore design which incorporates vertical integration is similar to that of the YOB-841 professional model. This results in improved projection and improved tonal qualities.
 
Newly designed undercut tone hole design
Also similar to the YOB-841, the new taper to the tone hole design provides the player with a smooth response and even intonation.
 
Nickel-silver bell ring
The bell ring increases effective density of the bell for a quicker response and a more focused sound.
 
French taper pivot screws
French taper pivot screws are designed for precise adjustment and increased longevity.
 
Stainless steel springs
Durability, key balance and a more comfortable feel are all benefits of using stainless steel as the spring material.