GR Technologies 67FD vs GR Technologies 67FL
the GR Technologies 67FD features a deeper cup.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
GR Technologies 67FD
• Flugelhorn
Backbore—
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
GR Technologies 67FL
• Flugelhorn
Backbore—
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.