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Conn Imp. Precision 1 vs Conn Imp. Precision 3

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 internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
    Conn Imp. Precision 1
    • Trombone
    Orchestral
    Cup diameter—
    Best suited for
    📋Large bore trombones; symphony
    🎶Good clear tone; large bore symphonic
    vs
    Mouthpiece B
      Conn Imp. Precision 3
      • Trombone
      General
      Cup diameter—
      Best suited for
      📋Large lips; all band work
      🎶Full round tone

      Which is better?

      The Conn Imp. Precision 1 is designed for orchestral playing, while the Conn Imp. Precision 3 targets general use. Your best choice depends on your musical context.

      Open in interactive tool + Add third mouthpiece Conn Imp. Precision 1 details Conn Imp. Precision 3 details Conn Imp. Precision 1 equivalents Conn Imp. Precision 3 equivalents

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