Bach 1 vs Curry 90S
The Curry 90S has a wider cup diameter, the Bach 1 features a deeper cup.
Mouthpiece A
Bach 1
• Trumpet
Cup diameter17.50 mm / 0.6890 in
Cup depthVery deep
Rim width—
Throat diameter3.66 mm / 0.1441 in
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Curry 90S
• Trumpet
Cup diameter17.53 mm / 0.6900 in
Cup depthShallow
Rim width—
Throat diameter3.66 mm / 0.1440 in
Backbore—
Finish—
Material—
Cup Diameter
The Curry 90S has a cup diameter of 17.53 mm / 0.6900 in compared to 17.50 mm / 0.6890 in on the Bach 1 — a difference of 0.03 mm / 0.0010 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bach 1 has a very deep cup while the Curry 90S has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
Throat diameters are essentially identical at 3.66 mm / 0.1441 in, so resistance feel will be comparable.
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.