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Bach 5G (large shank) vs Bach 5GB (large shank)

Both mouthpieces share similar core dimensions — the differences are in the details.

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 5G (large shank)
    • Trombone
    Throat diameter7.01 mm / 0.2760 in
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Bach 5GB (large shank)
      • Trombone
      Throat diameter7.01 mm / 0.2760 in
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📣High-volume projection — open throat for power

      Throat Diameter

      Throat diameters are essentially identical at 7.01 mm / 0.2760 in, so resistance feel will be comparable.

      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 5G (large shank) details Bach 5GB (large shank) details Bach 5G (large shank) equivalents Bach 5GB (large shank) equivalents

      Compare Bach 5G (large shank) with others

      Compare Bach 5GB (large shank) with others

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