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GR Technologies G66** vs Schilke 13A4a

the GR Technologies G66** features a deeper cup.

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
      Schilke 13A4a
      • 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 Schilke 13A4a details GR Technologies G66** equivalents Schilke 13A4a equivalents

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