Bruno Tilz 304- D 1 vs Schilke 38D
The Bruno Tilz 304- D 1 has a wider cup diameter.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bruno Tilz 304- D 1
• Baritone / Euphonium
CatalogCup diameter22.00 mm / 0.8661 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Schilke 38D
• Baritone / Euphonium
Cup diameter19.73 mm / 0.7768 in
Cup Diameter
The Bruno Tilz 304- D 1 has a cup diameter of 22.00 mm / 0.8661 in compared to 19.73 mm / 0.7768 in on the Schilke 38D — a difference of 2.27 mm / 0.0894 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.