The TBA1 Eb/ Bb alto trombone features an open wrap and 12.2 mm nickel silver single-bore hand-slide design that makes the instrument respond with ease. The TBA1 features a 180 mm yellow brass bell for great projection and a superb resonance. Handcrafted in our production facilities, this state of the art alto trombone combines a direct, rich, and sparkling sound with superior technical qualities and slide positions that feel like a tenor trombone.