Which has a bigger cup — Bruno Tilz 305-D 5 or Giardinelli 3M?

The Giardinelli 3M has a cup diameter of 26.30 mm / 1.0354 in compared to 26.00 mm / 1.0236 in on the Bruno Tilz 305-D 5 — 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 305-D 5 and Giardinelli 3M?

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

Bruno Tilz 305-D 5 vs Giardinelli 3M

Name: Giardinelli 3M
Brand: Giardinelli

The Giardinelli 3M has a wider cup diameter, the Giardinelli 3M 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 305-D 5

• Trombone

Catalog

Rim width—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Giardinelli 3M

• Trombone

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.

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Bruno Tilz 305-D 5 vs Giardinelli 3M

Playing Characteristics

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What Changes If You Switch?

Which is better?

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