Bruno Tilz 306-5 GS vs Bruno Tilz 306-5 GS
Both mouthpieces share similar core dimensions — the differences are in the details.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bruno Tilz 306-5 GS
• Trombone
CatalogThroat diameter6.80 mm / 0.2677 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bruno Tilz 306-5 GS
• Trombone
CatalogThroat diameter6.80 mm / 0.2677 in
Best suited for
High-volume projection — open throat for power
Throat Diameter
Throat diameters are essentially identical at 6.80 mm / 0.2677 in, so resistance feel will be comparable.
Which is better?
Both mouthpieces are categorized as "Catalog" — the physical dimensions above will determine which suits your embouchure and playing style better.