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GR Technologies G66*** vs GR Technologies G66**

Both mouthpieces share similar core dimensions — the differences are in the details.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
    GR Technologies G66***
    • Trumpet
    Cup diameter16.76 mm / 0.6598 in
    vs
    Mouthpiece B
      GR Technologies G66**
      • Trumpet
      Cup diameter16.76 mm / 0.6598 in

      Cup Diameter

      Both mouthpieces have virtually identical cup diameters at 16.76 mm / 0.6598 in.

      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 G66*** details GR Technologies G66** details GR Technologies G66*** equivalents GR Technologies G66** equivalents

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      Compare GR Technologies G66** with others

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