Home › Tuba › Bach 18 vs Conn Imp. Precision 1

Bach 18 vs Conn Imp. Precision 1

the Conn Imp. Precision 1 features a deeper cup.

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 18
    • Tuba
    Throat diameter9.00 mm / 0.3543 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Conn Imp. Precision 1
      • Tuba
      Orchestral
      Throat diameter—
      Best suited for
      📋BBb bass / sousaphone orchestral
      🎶Exceptionally full deep rich tone

      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 18 details Conn Imp. Precision 1 details Bach 18 equivalents Conn Imp. Precision 1 equivalents

      Compare Bach 18 with others

      Compare Conn Imp. Precision 1 with others

      Popular Tuba comparisons

      Bach vs Conn

      Browse by specification