Conn Precision 1 vs Denis Wick 4B
The Conn Precision 1 has a wider cup diameter, the Conn Precision 1 features a deeper cup.
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.
Cup Depth
The Conn Precision 1 has a — cup while the Denis Wick 4B has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Material
The Conn Precision 1 is described as Silver-plated brass, and the Denis Wick 4B as unspecified. Material affects mass, warmth, and how quickly the piece responds.
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.