Curry 3. FLD vs GR Technologies 63.5FD
The Curry 3. FLD has a wider cup diameter, the Curry 3. FLD features a deeper cup.
Mouthpiece A
Curry 3. FLD
• Flugelhorn
Cup diameter16.89 mm / 0.6650 in
Cup depthVery deep
Rim width—
Throat diameter4.50 mm / 0.1770 in
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
GR Technologies 63.5FD
• Flugelhorn
Cup diameter16.13 mm / 0.6350 in
Cup depthDeep
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Cup Diameter
The Curry 3. FLD has a cup diameter of 16.89 mm / 0.6650 in compared to 16.13 mm / 0.6350 in on the GR Technologies 63.5FD — a difference of 0.76 mm / 0.0300 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Curry 3. FLD has a very deep cup while the GR Technologies 63.5FD has a deep 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.