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Bach 12E vs Giardinelli Sym. B.

The Giardinelli Sym. B. has a wider cup diameter, the Giardinelli Sym. B. features a deeper cup, the Giardinelli Sym. B. has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
    Bach 12E
    • Trombone
    Cup diameter24.50 mm / 0.9646 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Giardinelli Sym. B.
      • Trombone
      Cup diameter26.70 mm / 1.0512 in
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📣High-volume projection — open throat for power

      Cup Diameter

      The Giardinelli Sym. B. has a cup diameter of 26.70 mm / 1.0512 in compared to 24.50 mm / 0.9646 in on the Bach 12E — a difference of 2.20 mm / 0.0866 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      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 12E details Giardinelli Sym. B. details Bach 12E equivalents Giardinelli Sym. B. equivalents

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