Marcinkiewicz E9M. Klein vs Yamaha TR-17D4

The Marcinkiewicz E9M. Klein has a wider cup diameter, the Marcinkiewicz E9M. Klein 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 E9M. Klein
    • Trumpet
    Rim width
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    vs
    Mouthpiece B
      Yamaha TR-17D4
      • Trumpet
      Rim width
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone

      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 E9M. Klein details Yamaha TR-17D4 details Marcinkiewicz E9M. Klein equivalents Yamaha TR-17D4 equivalents