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Conn Precision 1 vs Denis Wick 4B

The Conn Precision 1 has a wider cup diameter, the Conn Precision 1 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 Precision 1
    • Cornet
    General
    Cup diameter16.56 mm / 0.6520 in
    Best suited for
    📋All-around players; comfortable wide rim
    🎶Full round tone; suited to low notes
    vs
    Mouthpiece B
      Denis Wick 4B
      • Cornet
      Cup diameter16.50 mm / 0.6496 in
      Best suited for
      🎵All-round versatile — balanced cup for general playing
      📣High-volume projection — open throat for power

      Cup Diameter

      The Conn Precision 1 has a cup diameter of 16.56 mm / 0.6520 in compared to 16.50 mm / 0.6496 in on the Denis Wick 4B — a difference of 0.06 mm / 0.0024 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      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.

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