YBB-632S Bb Tubas

At 500mm, this is the largest bell among Yamaha Bb basses. Its size greatly improves dynamic range while delivering a stable sound that envelops the entire ensemble.

The bore size offers freer blowing with a moderate amount of resistance.

An ergonomically repositioned fourth valve offers improved playability and makes fast passages easier to play.

After a thorough evaluation of valve positioning, a new design promotes a more comfortable playing posture.

The semi-circular shaped hand rest makes the instrument easier to hold and reduces fatigue when holding the instrument for long periods of time.

Evaluating the angle of the mouthpiece led to a design that offers a more natural playing position.

A larger brace plate on the bell section delivers a moderate amount of resistance.