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Bach 1B vs Conn Imp. Precision 5

the Bach 1B 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
    Bach 1B
    • Cornet
    Throat diameter3.66 mm / 0.1441 in
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    vs
    Mouthpiece B
      Conn Imp. Precision 5
      • Cornet
      Lead
      Throat diameter—
      Best suited for
      📋Dance band / lead; standard on Conn 6B Victor
      🎶Bright tone; excellent in high register

      Which is better?

      Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.

      Open in interactive tool + Add third mouthpiece Bach 1B details Conn Imp. Precision 5 details Bach 1B equivalents Conn Imp. Precision 5 equivalents

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