Bruno Tilz 230-A 1 vs Yamaha BB-BOBO-SOLO-GP
The Yamaha BB-BOBO-SOLO-GP has a wider cup diameter, the Yamaha BB-BOBO-SOLO-GP features a deeper cup, the Yamaha BB-BOBO-SOLO-GP has a larger throat opening.
Cup Diameter
The Yamaha BB-BOBO-SOLO-GP has a cup diameter of 32.20 mm / 1.2677 in compared to 29.00 mm / 1.1417 in on the Bruno Tilz 230-A 1 — a difference of 3.20 mm / 0.1260 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Yamaha BB-BOBO-SOLO-GP has a shallow cup while the Bruno Tilz 230-A 1 has a very shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Yamaha BB-BOBO-SOLO-GP has a wider throat (7.50 mm / 0.2953 in vs 6.10 mm / 0.2402 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.