Mouthpiece for bigger low end.
- Deep cup
TB-LL back bore
27.75mm inner rim diameter
Best Brass BTB-1A Groove Series Bass Trombone Mouthpiece
The Best Brass BTB-1A is deep and large, and produces a very heavy bass trombone sound. It is designed for professional orchestral bass trombonists. As a reference, it resembles a Bach 1-1/4G, though it is slightly shallower than the Bach.
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