Bruno Tilz 213- A 3 vs Bruno Tilz 304- S 2
The Bruno Tilz 213- A 3 has a wider cup diameter, the Bruno Tilz 304- S 2 features a deeper cup, the Bruno Tilz 213- A 3 has a larger throat opening.
Cup Diameter
The Bruno Tilz 213- A 3 has a cup diameter of 24.00 mm compared to 23.00 mm on the Bruno Tilz 304- S 2 — a difference of +1.00 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bruno Tilz 304- S 2 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
The Bruno Tilz 213- A 3 has a wider throat (4.80 mm vs 4.60 mm). A wider throat allows more air through, increasing volume and projection but reducing resistance.
Which is better?
Both mouthpieces are categorized as "Catalog" — the physical dimensions above will determine which suits your embouchure and playing style better.