Bruno Tilz 310-M 28 vs Yamaha BB-BOBO-SYM-S
The Bruno Tilz 310-M 28 has a wider cup diameter, the Bruno Tilz 310-M 28 features a deeper cup, the Bruno Tilz 310-M 28 has a larger throat opening.
Cup Diameter
The Bruno Tilz 310-M 28 has a cup diameter of 33.50 mm / 1.3189 in compared to 32.90 mm / 1.2953 in on the Yamaha BB-BOBO-SYM-S — a difference of 0.60 mm / 0.0236 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bruno Tilz 310-M 28 has a deep cup while the Yamaha BB-BOBO-SYM-S has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Bruno Tilz 310-M 28 has a wider throat (8.30 mm / 0.3268 in vs 7.50 mm / 0.2953 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.