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

The Bruno Tilz 306-5 GS has a cup diameter of 26.00 mm / 1.0236 in compared to 25.00 mm / 0.9843 in on the Giardinelli 5M — a difference of 1.00 mm / 0.0394 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 5M?

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 5M

Name: Giardinelli 5M
Brand: Giardinelli

The Bruno Tilz 306-5 GS 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

The taper behind the throat leading to the shank. Affects projection and tone character.

Mouthpiece A

Bruno Tilz 306-5 GS

• Trombone

Catalog

Backbore—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Giardinelli 5M

• Trombone

Backbore15/64" (.234)

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 306-5 GS vs Giardinelli 5M

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

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