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Conn Precision 3 vs Yamaha SL-48L

the Conn Precision 3 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
    Conn Precision 3
    • Trombone
    General
    Backbore—
    Best suited for
    📋Musicians with large lips; all kinds of band work
    🎶Full round tone; ideal for large lips
    vs
    Mouthpiece B
      Yamaha SL-48L
      • Trombone
      BackboreSemi-narrow
      Best suited for
      📣High-volume projection — open throat for power

      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.

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