Which has a bigger cup — Bach Mega Tone Cornet 5B or Marcinkiewicz 12?

The Marcinkiewicz 12 has a cup diameter of 16.31 mm / 0.6421 in compared to 16.25 mm / 0.6398 in on the Bach Mega Tone Cornet 5B — 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 Bach Mega Tone Cornet 5B and Marcinkiewicz 12?

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

Bach Mega Tone Cornet 5B vs Marcinkiewicz 12

Name: Marcinkiewicz 12
Brand: Marcinkiewicz

The Marcinkiewicz 12 has a wider cup diameter.

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

Bach Mega Tone Cornet 5B

• Cornet

Rim width—

Mouthpiece B

Marcinkiewicz 12

• Cornet

Rim width—

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.