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Conn Imp. Precision 3A vs Conn Precision 3A

Both mouthpieces share similar core dimensions — the differences are in the details.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
    Conn Imp. Precision 3A
    • Trombone
    General
    Rim width—
    Best suited for
    📋General trombone
    🎶Good round tone all-around
    vs
    Mouthpiece B
      Conn Precision 3A
      • Trombone
      General
      Rim width—
      Best suited for
      📋General trombone use
      🎶Good round tone in all registers; all-around

      Which is better?

      Both mouthpieces are categorized as "General" — the physical dimensions above will determine which suits your embouchure and playing style better.

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      Compare Conn Imp. Precision 3A with others

      Compare Conn Precision 3A with others

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