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Kelly 7C vs Marcinkiewicz 2S

The Marcinkiewicz 2S has a wider cup diameter, the Kelly 7C features a deeper cup, the Marcinkiewicz 2S has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
    Kelly 7C
    • Cornet
    General
    BackboreS
    Best suited for
    🎵All-round versatile — balanced cup for general playing
    📋Beginner / intermediate
    vs
    Mouthpiece B
      Marcinkiewicz 2S
      • Cornet
      Backbore—

      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 Kelly 7C details Marcinkiewicz 2S details Kelly 7C equivalents Marcinkiewicz 2S equivalents

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