Bach 25 vs Curry 126D
The Curry 126D has a wider cup diameter, the Curry 126D features a deeper cup, the Bach 25 has a larger throat opening.
Cup Diameter
The Curry 126D has a cup diameter of 32.00 mm / 1.2600 in compared to 30.60 mm / 1.2047 in on the Bach 25 — a difference of 1.40 mm / 0.0553 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Curry 126D has a very deep cup while the Bach 25 has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Bach 25 has a wider throat (8.33 mm / 0.3280 in vs 8.23 mm / 0.3240 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.