The B4 Traditional Custom Series trumpet tends to play broader yet brighter than the model B6. The B4 features a medium bore and medium throat bell that will appeal to a player looking for a brilliant sound and desires efficiency with additional resistance.

The B4 trumpet is available in four variations—a fixed yellow brass bell, a fixed beryllium copper bell, a tunable yellow brass bell, and a tunable beryllium copper bell—each designed to customize the instrument performance to the player.