Which has a bigger cup — Bruno Tilz 305-D 5 or Yamaha SL-48S-GP?

The Bruno Tilz 305-D 5 has a cup diameter of 26.00 mm / 1.0236 in compared to 25.25 mm / 0.9941 in on the Yamaha SL-48S-GP — a difference of 0.75 mm / 0.0295 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bruno Tilz 305-D 5 and Yamaha SL-48S-GP?

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

Bruno Tilz 305-D 5 vs Yamaha SL-48S-GP

Name: Yamaha SL-48S-GP
Brand: Yamaha

The Bruno Tilz 305-D 5 has a wider cup diameter, the Yamaha SL-48S-GP has a larger throat opening.

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

Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.

Mouthpiece A

Bruno Tilz 305-D 5

• Trombone

Catalog

Material—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Yamaha SL-48S-GP

• Trombone

Material—

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.

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Bruno Tilz 305-D 5 vs Yamaha SL-48S-GP

Playing Characteristics

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