Conn Imp. Precision 6 vs Conn Precision 6
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 6
• Cornet
LeadCup diameter16.41 mm / 0.6461 in
Best suited for
Professional players
Professional lead; small throat; narrow rim
vs
Mouthpiece B
Conn Precision 6
• Cornet
LeadCup diameter16.41 mm / 0.6461 in
Best suited for
Professional lead players
Recommended for professionals; small throat
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 16.41 mm / 0.6461 in.
Which is better?
Both mouthpieces are categorized as "Lead" — the physical dimensions above will determine which suits your embouchure and playing style better.