Yamaha YCB-623 4/4 CC Tuba

From Yamaha: "From professional orchestras to college wind ensembles, these front-action piston tubas have been designed to give players the ability to create an energetic and reliable foundation for their ensemble. Based on input from world-class tubists, the 623S has a new layout that delivers evolutionary advances in function and playability, allowing the player to focus on what matter most: the music itself."