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Conn Precision 1 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 width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
    Conn Precision 1
    • Trombone
    Orchestral
    Rim width—
    Best suited for
    📋Large bore trombones; symphony work
    🎶Good clear tone; large bore symphonic
    vs
    Mouthpiece B
      Conn Precision 4
      • Trombone
      Orchestral
      Rim width—
      Best suited for
      📋Bass trombone
      🎶Full rich deep tone quality

      Which is better?

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

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