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Bach 17 vs Bach 20C

The Bach 17 has a wider cup diameter, the Bach 17 features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
    Bach 17
    • Cornet
    Backbore—
    vs
    Mouthpiece B
      Bach 20C
      • Cornet
      Backbore—

      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 17 details Bach 20C details Bach 17 equivalents Bach 20C equivalents

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