Bruno Tilz 213- A 3 vs Bruno Tilz 213- S 3
the Bruno Tilz 213- S 3 features a deeper cup.
Mouthpiece A
Bruno Tilz 213- A 3
• Baritone / Euphonium
CatalogCup diameter24.00 mm / 0.9449 in
Cup depthVery shallow
Rim width—
Throat diameter4.80 mm / 0.1890 in
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bruno Tilz 213- S 3
• Baritone / Euphonium
CatalogCup diameter24.00 mm / 0.9449 in
Cup depthMedium
Rim width—
Throat diameter4.80 mm / 0.1890 in
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 24.00 mm / 0.9449 in.
Cup Depth
The Bruno Tilz 213- S 3 has a medium cup while the Bruno Tilz 213- A 3 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 4.80 mm / 0.1890 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.