The Yamaha YBB632 Neo Series Bb Tuba is a recently adapted instrument. Featuring a new leadpipe taper that produces better resistance. Not to mention that this tuba features the largest bell among Yamahas BBb basses. At 500mm the bell increases this products dynamic range. The repositioning of the fourth valve is one of the biggest improvements made to the YBB632 tuba and one of the biggest changes for players. Where it was once uncomfortable and difficult to access the fourth valve is now easily reachable and comfortable to hold for long periods of time. Instead of being tucked behind the valve is now repositioned through the middle of the third valve slide making it closer for the player to reach. A natural connection is now made between the player and the fourth valve. The Yamaha BBb basses have been designed to meet the needs of all brass bands with the influence of Simon Gresswell.