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Conn Imp. Precision 4 vs Yamaha SL-48DL

the Conn Imp. Precision 4 features a deeper cup.

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 4
    • Trombone
    Orchestral
    Cup diameter—
    Best suited for
    📋Bass trombone / large bore tenor
    🎶Full rich deep tone
    vs
    Mouthpiece B
      Yamaha SL-48DL
      • Trombone
      Cup diameter25.25 mm / 0.9941 in
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📣High-volume projection — open throat for power

      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 Conn Imp. Precision 4 details Yamaha SL-48DL details Conn Imp. Precision 4 equivalents Yamaha SL-48DL equivalents

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