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Bach 3 vs Giardinelli 3D

The Giardinelli 3D has a wider cup diameter, the Giardinelli 3D 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 3
    • Trombone
    Cup diameter26.26 mm / 1.0339 in
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Giardinelli 3D
      • Trombone
      Cup diameter26.30 mm / 1.0354 in
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📣High-volume projection — open throat for power

      Cup Diameter

      The Giardinelli 3D has a cup diameter of 26.30 mm / 1.0354 in compared to 26.26 mm / 1.0339 in on the Bach 3 — a difference of 0.04 mm / 0.0016 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 3 details Giardinelli 3D details Bach 3 equivalents Giardinelli 3D equivalents

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