Bruno Tilz 310-M 7 vs Bruno Tilz 310-MS 9
the Bruno Tilz 310-M 7 has a larger throat opening.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Bruno Tilz 310-M 7
• Tuba
CatalogBackbore—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bruno Tilz 310-MS 9
• 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.