Which has a bigger cup — Bruno Tilz 310-M 12 or Yamaha BB-BOBO-SOLO-GP?

The Bruno Tilz 310-M 12 has a cup diameter of 32.50 mm / 1.2795 in compared to 32.20 mm / 1.2677 in on the Yamaha BB-BOBO-SOLO-GP — a difference of 0.30 mm / 0.0118 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bruno Tilz 310-M 12 and Yamaha BB-BOBO-SOLO-GP?

Both mouthpieces share a shallow cup depth, so the sound character from depth alone will be very similar.

Bruno Tilz 310-M 12 vs Yamaha BB-BOBO-SOLO-GP

Name: Yamaha BB-BOBO-SOLO-GP
Brand: Yamaha

The Bruno Tilz 310-M 12 has a wider cup diameter, the Yamaha BB-BOBO-SOLO-GP 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

Bruno Tilz 310-M 12

• Tuba

Catalog

Rim width—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Yamaha BB-BOBO-SOLO-GP

• Tuba

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 Bruno Tilz 310-M 12 details Yamaha BB-BOBO-SOLO-GP details Bruno Tilz 310-M 12 equivalents Yamaha BB-BOBO-SOLO-GP equivalents

Bruno Tilz 310-M 12 vs Yamaha BB-BOBO-SOLO-GP

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

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