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Kelly 5G-LS vs Yamaha SL-YEO-S

The Yamaha SL-YEO-S has a wider cup diameter, the Kelly 5G-LS features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
    Kelly 5G-LS
    • Trombone
    Orchestral
    Cup depth
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📋Symphonic trombone / euphonium
    vs
    Mouthpiece B
      Yamaha SL-YEO-S
      • Trombone
      Cup depthDeep
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📣High-volume projection — open throat for power

      Cup Depth

      The Kelly 5G-LS has a — cup while the Yamaha SL-YEO-S has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

      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 5G-LS details Yamaha SL-YEO-S details Kelly 5G-LS equivalents Yamaha SL-YEO-S equivalents

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