Which has a bigger cup — Bach 18 or Curry 128D?

The Curry 128D has a cup diameter of 32.51 mm / 1.2800 in compared to 32.10 mm / 1.2638 in on the Bach 18 — a difference of 0.41 mm / 0.0162 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 18 and Curry 128D?

The Curry 128D has a very deep cup while the Bach 18 has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 18 vs Curry 128D

Name: Curry 128D
Brand: Curry

The Curry 128D has a wider cup diameter, the Curry 128D features a deeper cup, the Bach 18 has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.

Mouthpiece A

Bach 18

• Tuba

Finish—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Curry 128D

• Tuba

Finish—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣High-volume projection — open throat for power

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.

Open in interactive tool + Add third mouthpiece Bach 18 details Curry 128D details Bach 18 equivalents Curry 128D equivalents

Bach 18 vs Curry 128D

Playing Characteristics

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