Bruno Tilz 213- D 2 vs Bruno Tilz 304- B 2
the Bruno Tilz 213- D 2 features a deeper cup.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bruno Tilz 213- D 2
• Baritone / Euphonium
CatalogThroat diameter4.60 mm / 0.1811 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bruno Tilz 304- B 2
• Baritone / Euphonium
CatalogThroat diameter4.60 mm / 0.1811 in
Best suited for
High-volume projection — open throat for power
Throat Diameter
Throat diameters are essentially identical at 4.60 mm / 0.1811 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.