Bach 24AW vs Yamaha BB-BOBO-SYM-GP
The Yamaha BB-BOBO-SYM-GP has a wider cup diameter, the Bach 24AW features a deeper cup, the Bach 24AW has a larger throat opening.
Cup Diameter
The Yamaha BB-BOBO-SYM-GP has a cup diameter of 32.90 mm compared to 31.25 mm on the Bach 24AW — a difference of +1.65 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bach 24AW has a very deep cup while the Yamaha BB-BOBO-SYM-GP has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Bach 24AW has a wider throat (9.00 mm vs 7.50 mm). 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.