Denis Wick 4F vs GR Technologies G66FD Radtke
The GR Technologies G66FD Radtke has a wider cup diameter, the Denis Wick 4F features a deeper cup.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
Denis Wick 4F
• Flugelhorn
Rim width5.17 mm / 0.2035 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
GR Technologies G66FD Radtke
• Flugelhorn
Rim width—
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.