Conn Imp. Precision 3 vs Conn Precision 2
Both mouthpieces share similar core dimensions — the differences are in the details.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Conn Imp. Precision 3
• Tuba
GeneralCup diameter—
Best suited for
Large Eb bass
Full round tone
vs
Mouthpiece B
Conn Precision 2
• Tuba
GeneralCup diameter—
Best suited for
BBb bass; general use
Full rich tone in all registers
Which is better?
Both mouthpieces are categorized as "General" — the physical dimensions above will determine which suits your embouchure and playing style better.