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GR Technologies G66FD Radtke vs Schilke 20F

The Schilke 20F has a wider cup diameter, the GR Technologies G66FD Radtke features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
    GR Technologies G66FD Radtke
    • Flugelhorn
    Throat diameter—
    vs
    Mouthpiece B
      Schilke 20F
      • Flugelhorn
      Throat diameter3.86 mm / 0.1520 in
      Best suited for
      📣High-volume projection — open throat for power

      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.

      Open in interactive tool + Add third mouthpiece GR Technologies G66FD Radtke details Schilke 20F details GR Technologies G66FD Radtke equivalents Schilke 20F equivalents

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