The new Bach A47 is completely modular system allowing each player to customize the Artisan trombone to meet their own playing needs. The 8-1/2" one-piece hand-hammered yellow brass Bach Artisan bell will define the symphonic sound for generations. The .547" large bore offers a warm sound, great projection, and most efficient feel. The new reverse main tuning slide construction offers a more open response. The chrome plated nickel silver inner handslide tubes provide the ideal surface for smooth and quick handslide action. The clear lacquer finish adds a subtle warmth to the sound overall. The Bach Stradivarius A47 professional trombone is ideal for both symphonic and solo performance.