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Bruno Tilz 214-D 4 vs Yamaha SL-48L

The Bruno Tilz 214-D 4 has a wider cup diameter, the Bruno Tilz 214-D 4 features a deeper cup, the Yamaha SL-48L has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
    Bruno Tilz 214-D 4
    • Trombone
    Catalog
    Cup diameter25.80 mm / 1.0157 in
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Yamaha SL-48L
      • Trombone
      Cup diameter25.25 mm / 0.9941 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Bruno Tilz 214-D 4 has a cup diameter of 25.80 mm / 1.0157 in compared to 25.25 mm / 0.9941 in on the Yamaha SL-48L — a difference of 0.55 mm / 0.0217 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      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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