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Bach 9 vs Yamaha SL-48DL

The Yamaha SL-48DL has a wider cup diameter, the Yamaha SL-48DL has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
    Bach 9
    • Trombone
    Cup depthDeep
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Yamaha SL-48DL
      • Trombone
      Cup depthDeep
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📣High-volume projection — open throat for power

      Cup Depth

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

      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 Bach 9 details Yamaha SL-48DL details Bach 9 equivalents Yamaha SL-48DL equivalents

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