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Bach 15 vs Bruno Tilz 304- B 2

The Bach 15 has a wider cup diameter, the Bach 15 features a deeper cup, the Bach 15 has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
    Bach 15
    • Baritone / Euphonium
    Throat diameter5.85 mm / 0.2303 in
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Bruno Tilz 304- B 2
      • Baritone / Euphonium
      Catalog
      Throat diameter4.60 mm / 0.1811 in
      Best suited for
      📣High-volume projection — open throat for power

      Throat Diameter

      The Bach 15 has a wider throat (5.85 mm / 0.2303 in vs 4.60 mm / 0.1811 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.

      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 15 details Bruno Tilz 304- B 2 details Bach 15 equivalents Bruno Tilz 304- B 2 equivalents

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