Denis Wick 2L vs Kelly JACOBS-SS
The Denis Wick 2L has a wider cup diameter, the Denis Wick 2L features a deeper cup.
Cup Diameter
The Denis Wick 2L has a cup diameter of 32.00 mm / 1.2598 in compared to 31.75 mm / 1.2500 in on the Kelly JACOBS-SS — a difference of 0.25 mm / 0.0098 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 Kelly JACOBS-SS has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Material
The Denis Wick 2L is described as unspecified, and the Kelly JACOBS-SS as 316 Surgical Stainless Steel. 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.