Home › Trombone › Bach 12E vs Marcinkiewicz ET1B. PeeblesBass Shank Only

Bach 12E vs Marcinkiewicz ET1B. PeeblesBass Shank Only

The Marcinkiewicz ET1B. PeeblesBass Shank Only has a wider cup diameter, the Bach 12E features a deeper cup, the Marcinkiewicz ET1B. PeeblesBass Shank Only has a larger throat opening.

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 12E
    • Trombone
    Throat diameter5.85 mm / 0.2303 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Marcinkiewicz ET1B. PeeblesBass Shank Only
      • Trombone
      Throat diameter6.76 mm / 0.2661 in
      Best suited for
      📣High-volume projection — open throat for power

      Throat Diameter

      The Marcinkiewicz ET1B. PeeblesBass Shank Only has a wider throat (6.76 mm / 0.2661 in vs 5.85 mm / 0.2303 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.

      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 Marcinkiewicz ET1B. PeeblesBass Shank Only details Bach 12E equivalents Marcinkiewicz ET1B. PeeblesBass Shank Only equivalents

      Compare Bach 12E with others

      Compare Marcinkiewicz ET1B. PeeblesBass Shank Only with others

      Popular Trombone comparisons

      Bach vs Marcinkiewicz

      Browse by specification