Conn Imp. Precision 3 vs Marcinkiewicz ETU1J. Self
the Conn Imp. Precision 3 features a deeper cup.
Mouthpiece A
Conn Imp. Precision 3
• Tuba
GeneralCup diameter—
Cup depth
Rim width—
Throat diameter—
Backbore—
Finish—
MaterialSilver-plated brass
Best suited for
Large Eb bass
Full round tone
vs
Mouthpiece B
Marcinkiewicz ETU1J. Self
• Tuba
Cup diameter33.15 mm / 1.3051 in
Cup depthMedium
Rim width—
Throat diameter8.03 mm / 0.3161 in
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Depth
The Conn Imp. Precision 3 has a — cup while the Marcinkiewicz ETU1J. Self has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Material
The Conn Imp. Precision 3 is described as Silver-plated brass, and the Marcinkiewicz ETU1J. Self as unspecified. Material affects mass, warmth, and how quickly the piece responds.
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.