Marcinkiewicz 9BB. Stroup vs Schilke 45B

The Marcinkiewicz 9BB. Stroup has a wider cup diameter, the Schilke 45B features a deeper cup, the Marcinkiewicz 9BB. Stroup 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
    Marcinkiewicz 9BB. Stroup
    • Trombone
    Rim width
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Schilke 45B
      • 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.

      Open in interactive tool + Add third mouthpiece Marcinkiewicz 9BB. Stroup details Schilke 45B details Marcinkiewicz 9BB. Stroup equivalents Schilke 45B equivalents