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Giardinelli 1GM vs Kelly SYMPHONY-LS-SS

The Giardinelli 1GM has a wider cup diameter, the Kelly SYMPHONY-LS-SS features a deeper cup.

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
    Giardinelli 1GM
    • Trombone
    Backbore17/64 (.265)"
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Kelly SYMPHONY-LS-SS
      • Trombone
      Orchestral
      BackboreL
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📋Symphonic trombone

      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 Giardinelli 1GM details Kelly SYMPHONY-LS-SS details Giardinelli 1GM equivalents Kelly SYMPHONY-LS-SS equivalents

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