Bruno Tilz 304- A 2 vs Bruno Tilz 304- B 2
the Bruno Tilz 304- B 2 features a deeper cup.
Mouthpiece A
Bruno Tilz 304- A 2
• Baritone / Euphonium
CatalogCup diameter23.00 mm / 0.9055 in
Cup depthVery shallow
Rim width—
Throat diameter4.60 mm / 0.1811 in
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bruno Tilz 304- B 2
• Baritone / Euphonium
CatalogCup diameter23.00 mm / 0.9055 in
Cup depthShallow
Rim width—
Throat diameter4.60 mm / 0.1811 in
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 23.00 mm / 0.9055 in.
Cup Depth
The Bruno Tilz 304- B 2 has a shallow cup while the Bruno Tilz 304- A 2 has a very shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
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.