GR Technologies 67FD vs GR Technologies 67FL
the GR Technologies 67FD features a deeper cup.
Mouthpiece A
GR Technologies 67FD
• Flugelhorn
Cup diameter17.00 mm / 0.6693 in
Cup depthDeep
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
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
Both mouthpieces have virtually identical cup diameters at 17.00 mm / 0.6693 in.
Cup Depth
The GR Technologies 67FD has a 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.