Which has a bigger cup — Bruno Tilz 306-5 GS or Marcinkiewicz CH 4 BS?

The Marcinkiewicz CH 4 BS has a cup diameter of 26.06 mm / 1.0260 in compared to 26.00 mm / 1.0236 in on the Bruno Tilz 306-5 GS — a difference of 0.06 mm / 0.0024 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 Marcinkiewicz CH 4 BS?

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

Bruno Tilz 306-5 GS vs Marcinkiewicz CH 4 BS

Name: Marcinkiewicz CH 4 BS
Brand: Marcinkiewicz

The Marcinkiewicz CH 4 BS has a wider cup diameter, the Marcinkiewicz CH 4 BS has a larger throat opening.

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

Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.

Mouthpiece A

Bruno Tilz 306-5 GS

• Trombone

Catalog

Finish—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Marcinkiewicz CH 4 BS

• Trombone

Finish—

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 Marcinkiewicz CH 4 BS

Playing Characteristics

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What Changes If You Switch?

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