Bach 30E vs Yamaha BB-67C4

The Yamaha BB-67C4 has a wider cup diameter, the Yamaha BB-67C4 features a deeper cup, the Bach 30E has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.
Mouthpiece A
    Bach 30E
    • Tuba
    Material
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Yamaha BB-67C4
      • Tuba
      Material
      Best suited for
      📣High-volume projection — open throat for power

      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 30E details Yamaha BB-67C4 details Bach 30E equivalents Yamaha BB-67C4 equivalents