Curry 3 C. vs GR Technologies 3M
The Curry 3 C. has a wider cup diameter.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Curry 3 C.
• Trumpet
Cup diameter16.89 mm / 0.6650 in
vs
Mouthpiece B
GR Technologies 3M
• Trumpet
Cup diameter16.76 mm / 0.6598 in
Cup Diameter
The Curry 3 C. has a cup diameter of 16.89 mm / 0.6650 in compared to 16.76 mm / 0.6598 in on the GR Technologies 3M — a difference of 0.13 mm / 0.0052 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.