Bruno Tilz 231-A 2 vs Bruno Tilz 231-B 2
the Bruno Tilz 231-B 2 features a deeper cup.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Bruno Tilz 231-A 2
• Tuba
CatalogBackbore—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bruno Tilz 231-B 2
• Tuba
CatalogBackbore—
Best suited for
High-volume projection — open throat for power
Which is better?
Both mouthpieces are categorized as "Catalog" — the physical dimensions above will determine which suits your embouchure and playing style better.