Home › Trombone › Bruno Tilz 306-9 1/2 G vs Bruno Tilz 306-9 1/2 GT

Bruno Tilz 306-9 1/2 G vs Bruno Tilz 306-9 1/2 GT

the Bruno Tilz 306-9 1/2 GT features a deeper cup, the Bruno Tilz 306-9 1/2 GT has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Mouthpiece A
    Bruno Tilz 306-9 1/2 G
    • Trombone
    Catalog
    Cup diameter29.50 mm / 1.1614 in
    Cup depthMedium
    Rim width—
    Throat diameter7.20 mm / 0.2835 in
    Backbore—
    Finish—
    Material—
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Bruno Tilz 306-9 1/2 GT
      • Trombone
      Catalog
      Cup diameter29.50 mm / 1.1614 in
      Cup depthDeep
      Rim width—
      Throat diameter7.30 mm / 0.2874 in
      Backbore—
      Finish—
      Material—
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📣High-volume projection — open throat for power

      Cup Diameter

      Both mouthpieces have virtually identical cup diameters at 29.50 mm / 1.1614 in.

      Cup Depth

      The Bruno Tilz 306-9 1/2 GT has a deep cup while the Bruno Tilz 306-9 1/2 G has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

      Throat Diameter

      The Bruno Tilz 306-9 1/2 GT has a wider throat (7.30 mm / 0.2874 in vs 7.20 mm / 0.2835 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.

      Which is better?

      Both mouthpieces are categorized as "Catalog" — the physical dimensions above will determine which suits your embouchure and playing style better.

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