The King K30 Series Marching Bb Euphonium is a hybrid euphonium offering deep, rich voicing to complement the balance of any marching organization. It combines the sound and response of a concert euphonium with the size and balance of a marching baritone. Allows for a full lower register and a unique voicing on the field that baritones cannot offer. Nickel-plated pistons provide smooth, quick action and unmatched durability. The heavy-duty marching case is designed to be stackable to minimize space requirements.