Which has a bigger cup — Bruno Tilz 306-5 GS 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 306-5 GS — 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 306-5 GS and Giardinelli 3M?

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

Bruno Tilz 306-5 GS vs Giardinelli 3M

Name: Giardinelli 3M
Brand: Giardinelli

The Giardinelli 3M has a wider cup diameter, the Bruno Tilz 306-5 GS 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 306-5 GS

• Trombone

Catalog

Material—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Giardinelli 3M

• 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.

Open in interactive tool + Add third mouthpiece Bruno Tilz 306-5 GS details Giardinelli 3M details Bruno Tilz 306-5 GS equivalents Giardinelli 3M equivalents

Bruno Tilz 306-5 GS vs Giardinelli 3M

Playing Characteristics

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What Changes If You Switch?

Which is better?

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