Bach 1¼G vs Bruno Tilz 215-3 D
The Bruno Tilz 215-3 D has a wider cup diameter, the Bach 1¼G features a deeper cup, the Bruno Tilz 215-3 D has a larger throat opening.
Cup Diameter
The Bruno Tilz 215-3 D has a cup diameter of 28.50 mm / 1.1220 in compared to 27.50 mm / 1.0827 in on the Bach 1¼G — a difference of 1.00 mm / 0.0394 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bach 1¼G has a very deep cup while the Bruno Tilz 215-3 D has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Bruno Tilz 215-3 D has a wider throat (7.60 mm / 0.2992 in vs 7.01 mm / 0.2760 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.