Denis Wick 2L vs Yamaha BB-66D4
The Denis Wick 2L has a wider cup diameter, the Denis Wick 2L features a deeper cup, the Yamaha BB-66D4 has a larger throat opening.
Cup Diameter
The Denis Wick 2L has a cup diameter of 32.00 mm / 1.2598 in compared to 31.49 mm / 1.2398 in on the Yamaha BB-66D4 — a difference of 0.51 mm / 0.0201 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Denis Wick 2L has a very deep cup while the Yamaha BB-66D4 has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Yamaha BB-66D4 has a wider throat (8.87 mm / 0.3492 in vs 8.45 mm / 0.3327 in). 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.