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Denis Wick 4FL vs GR Technologies 66.5FL Almeida

The GR Technologies 66.5FL Almeida has a wider cup diameter, the Denis Wick 4FL features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
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 66.5FL Almeida
      • Flugelhorn
      Cup diameter16.89 mm / 0.6650 in
      Cup depthMedium
      Rim width—
      Throat diameter—
      Backbore—
      Finish—
      Material—

      Cup Diameter

      The GR Technologies 66.5FL Almeida has a cup diameter of 16.89 mm / 0.6650 in compared to 16.50 mm / 0.6496 in on the Denis Wick 4FL — a difference of 0.39 mm / 0.0154 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 66.5FL Almeida 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.

      Open in interactive tool + Add third mouthpiece Denis Wick 4FL details GR Technologies 66.5FL Almeida details Denis Wick 4FL equivalents GR Technologies 66.5FL Almeida equivalents

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      Compare GR Technologies 66.5FL Almeida with others

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