Curry 2 J vs GR Technologies 63.5FD
The Curry 2 J has a wider cup diameter, the GR Technologies 63.5FD features a deeper cup.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Curry 2 J
• Flugelhorn
Cup diameter16.97 mm / 0.6680 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
GR Technologies 63.5FD
• Flugelhorn
Cup diameter16.13 mm / 0.6350 in
Cup Diameter
The Curry 2 J has a cup diameter of 16.97 mm / 0.6680 in compared to 16.13 mm / 0.6350 in on the GR Technologies 63.5FD — a difference of 0.84 mm / 0.0330 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.