Denis Wick 4E vs Yamaha TR-SHEW-LEAD
The Yamaha TR-SHEW-LEAD has a wider cup diameter, the Denis Wick 4E has a larger throat opening.
Cup Diameter
The Yamaha TR-SHEW-LEAD has a cup diameter of 16.54 mm / 0.6512 in compared to 16.50 mm / 0.6496 in on the Denis Wick 4E — a difference of 0.04 mm / 0.0016 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a very shallow cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Denis Wick 4E has a wider throat (3.74 mm / 0.1472 in vs 3.56 mm / 0.1402 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.