Conn Imp. Precision 3 vs Conn Precision 4
Both mouthpieces share similar core dimensions — the differences are in the details.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
Conn Imp. Precision 3
• Cornet
GeneralRim width—
Best suited for
All-round versatile — balanced cup for general playing
Most popular model; all-around
Bright quality of tone in all registers
vs
Mouthpiece B
Conn Precision 4
• Cornet
GeneralRim width—
Best suited for
All-round versatile — balanced cup for general playing
Players with large lips; close to Bach 2C/Schilke 16C4
Bright tone; same as Model 3 with wide rim
Which is better?
Both mouthpieces are categorized as "General" — the physical dimensions above will determine which suits your embouchure and playing style better.