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Kelly 18 vs Kelly 24AW

The Kelly 18 has a wider cup diameter, the Kelly 18 features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
    Kelly 18
    • Tuba
    General
    Throat diameter—
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📋Industry-standard tuba
    vs
    Mouthpiece B
      Kelly 24AW
      • Tuba
      General
      Throat diameter—
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📋Tuba / sousaphone

      Which is better?

      Both mouthpieces are categorized as "General" — the physical dimensions above will determine which suits your embouchure and playing style better.

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