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Conn Precision 3 vs Conn Precision 4

the Conn Precision 4 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
    Conn Precision 3
    • Trombone
    General
    Throat diameter—
    Best suited for
    📋Musicians with large lips; all kinds of band work
    🎶Full round tone; ideal for large lips
    vs
    Mouthpiece B
      Conn Precision 4
      • Trombone
      Orchestral
      Throat diameter—
      Best suited for
      📋Bass trombone
      🎶Full rich deep tone quality

      Which is better?

      The Conn Precision 3 is designed for general playing, while the Conn Precision 4 targets orchestral use. Your best choice depends on your musical context.

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