Denis Wick 4FL vs GR Technologies 67FL
The GR Technologies 67FL has a wider cup diameter, the Denis Wick 4FL features a deeper cup.
Mouthpiece A
Denis Wick 4FL
• Flugelhorn
Cup diameter16.50 mm / 0.6496 in
Cup depthVery deep
Rim width5.17 mm / 0.2035 in
Throat diameter4.58 mm / 0.1803 in
Backboreopen
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
GR Technologies 67FL
• Flugelhorn
Cup diameter17.00 mm / 0.6693 in
Cup depthMedium
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Cup Diameter
The GR Technologies 67FL has a cup diameter of 17.00 mm / 0.6693 in compared to 16.50 mm / 0.6496 in on the Denis Wick 4FL — a difference of 0.50 mm / 0.0197 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Denis Wick 4FL has a very deep cup while the GR Technologies 67FL 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.