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GR Technologies 66.5MS vs Schilke 13A4a

The GR Technologies 66.5MS has a wider cup diameter, the GR Technologies 66.5MS features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.
Mouthpiece A
    GR Technologies 66.5MS
    • Trumpet
    Finish—
    vs
    Mouthpiece B
      Schilke 13A4a
      • Trumpet
      Finish—

      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 66.5MS details Schilke 13A4a details GR Technologies 66.5MS equivalents Schilke 13A4a equivalents

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