The 641 professional BBb tuba features a rotary valve configuration for a traditional Teutonic sound with the kind of precise intonation and easy playability only made possible by modern engineering expertise. It is characterized by a warm dark sound with an abundance of tonal colors. Features Hand-lapped rotary valves Hand-lapping is a time-consuming finishing process which results in superior valve fit for noiseless, responsive action and easy tone changes. | 
