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Bach 12E vs Bach Mega Tone Trombone 11C

The Bach Mega Tone Trombone 11C has a wider cup diameter.

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
      Bach Mega Tone Trombone 11C
      • Trombone
      Cup diameter24.70 mm / 0.9724 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Bach Mega Tone Trombone 11C has a cup diameter of 24.70 mm / 0.9724 in compared to 24.50 mm / 0.9646 in on the Bach 12E — a difference of 0.20 mm / 0.0079 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 Bach Mega Tone Trombone 11C details Bach 12E equivalents Bach Mega Tone Trombone 11C equivalents

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