Denis Wick 4 vs Yamaha BB-BOBO-SOLO-GP
The Yamaha BB-BOBO-SOLO-GP has a wider cup diameter, the Denis Wick 4 features a deeper cup, the Denis Wick 4 has a larger throat opening.
Cup Diameter
The Yamaha BB-BOBO-SOLO-GP has a cup diameter of 32.20 mm compared to 30.50 mm on the Denis Wick 4 — a difference of +1.70 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Denis Wick 4 has a very deep cup while the Yamaha BB-BOBO-SOLO-GP has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Denis Wick 4 has a wider throat (8.27 mm vs 7.50 mm). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.