Conn Imp. Precision 4 vs Conn Precision 3

the Conn Imp. 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 Imp. Precision 4
    • Trombone
    Orchestral
    Throat diameter
    Best suited for
    📋Bass trombone / large bore tenor
    🎶Full rich deep tone
    vs
    Mouthpiece B
      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

      Which is better?

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

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