Curry 3 C. vs GR Technologies 67CX
The GR Technologies 67CX has a wider cup diameter, the GR Technologies 67CX features a deeper cup.
Mouthpiece A
Curry 3 C.
• Trumpet
Cup diameter16.89 mm / 0.6650 in
Cup depthMedium
Rim width—
Throat diameter3.70 mm / 0.1455 in
Backbore—
Finish—
Material—
vs
Mouthpiece B
GR Technologies 67CX
• Trumpet
Cup diameter17.00 mm / 0.6693 in
Cup depthVery deep
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
Cup Diameter
The GR Technologies 67CX has a cup diameter of 17.00 mm / 0.6693 in compared to 16.89 mm / 0.6650 in on the Curry 3 C. — a difference of 0.11 mm / 0.0043 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The GR Technologies 67CX has a very deep cup while the Curry 3 C. has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
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.