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Bach 9A vs Kelly 6V

The Bach 9A has a wider cup diameter, the Kelly 6V features a deeper cup, the Kelly 6V has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.
Mouthpiece A
    Bach 9A
    • Cornet
    Finish—
    vs
    Mouthpiece B
      Kelly 6V
      • Cornet
      Dark/Deep
      Finish—
      Best suited for
      📣High-volume projection — open throat for power
      📋Deep V-cup to fill out cornet sound

      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 9A details Kelly 6V details Bach 9A equivalents Kelly 6V equivalents

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