Which has a bigger cup — Bach 18 or Bruno Tilz 310-M 42?

The Bruno Tilz 310-M 42 has a cup diameter of 33.00 mm / 1.2992 in compared to 32.10 mm / 1.2638 in on the Bach 18 — a difference of 0.90 mm / 0.0354 in. A wider cup generally produces a fuller, darker tone but requires more air support.

Bach 18 vs Bruno Tilz 310-M 42

Name: Bruno Tilz 310-M 42
Brand: Bruno Tilz

The Bruno Tilz 310-M 42 has a wider cup diameter, the Bach 18 has a larger throat opening.

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

The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.

Mouthpiece A

Bach 18

• Tuba

Rim width—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Bruno Tilz 310-M 42

• Tuba

Catalog

Rim width—

Best suited for

📣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 Bruno Tilz 310-M 42 details Bach 18 equivalents Bruno Tilz 310-M 42 equivalents

Bach 18 vs Bruno Tilz 310-M 42

Playing Characteristics

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Which is better?

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