Bruno Tilz 200-13 vs GR Technologies 63S
The Bruno Tilz 200-13 has a wider cup diameter, the GR Technologies 63S features a deeper cup.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bruno Tilz 200-13
• Trumpet
CatalogCup diameter16.50 mm / 0.6496 in
Best suited for
Screamer / high notes — tight throat with shallow cup
vs
Mouthpiece B
GR Technologies 63S
• Trumpet
Cup diameter16.00 mm / 0.6299 in
Best suited for
Lead / commercial — shallow cup for brightness and range
Cup Diameter
The Bruno Tilz 200-13 has a cup diameter of 16.50 mm / 0.6496 in compared to 16.00 mm / 0.6299 in on the GR Technologies 63S — a difference of 0.50 mm / 0.0197 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.