Curry 3 C. vs GR Technologies 66.6M2**
The GR Technologies 66.6M2** has a wider cup diameter, the GR Technologies 66.6M2** 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 66.6M2**
• Trumpet
Cup diameter16.92 mm / 0.6661 in
Cup depthDeep
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
Cup Diameter
The GR Technologies 66.6M2** has a cup diameter of 16.92 mm / 0.6661 in compared to 16.89 mm / 0.6650 in on the Curry 3 C. — a difference of 0.03 mm / 0.0011 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The GR Technologies 66.6M2** has a 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.