Denis Wick RW3FL vs GR Technologies 67FD
The GR Technologies 67FD has a wider cup diameter, the Denis Wick RW3FL features a deeper cup.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Denis Wick RW3FL
• Flugelhorn
Cup diameter16.75 mm / 0.6594 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
GR Technologies 67FD
• Flugelhorn
Cup diameter17.00 mm / 0.6693 in
Best suited for
Orchestral playing — large cup for full, dark tone
Cup Diameter
The GR Technologies 67FD has a cup diameter of 17.00 mm / 0.6693 in compared to 16.75 mm / 0.6594 in on the Denis Wick RW3FL — a difference of 0.25 mm / 0.0098 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.