This sousaphone features a large .687′  bore, and alongside the 26′ forward facing bell, it offers a rich, resonant tone with excellent projection and volume. The JP2057 Sousaphone also has very quick responsive valves and is perfectly weighted and shaped to allow a comfortable playing position. The leadpipe is detachable, and is assembled from 3 separate parts, allowing the player to choose the most comfortable mouthpiece position.