Conn Imp. Precision 4 vs Conn Precision 3
Both mouthpieces share similar core dimensions — the differences are in the details.
Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.
Mouthpiece A
Conn Imp. Precision 4
• Cornet
GeneralFinish—
Best suited for
All-round versatile — balanced cup for general playing
Players with large full lips; most common surviving example
Bright tone; same as Model 3 with wide rim
vs
Mouthpiece B
Conn Precision 3
• Cornet
GeneralFinish—
Best suited for
All-round versatile — balanced cup for general playing
All-around use; most popular model
Bright quality of tone in all registers; good all-around
Which is better?
Both mouthpieces are categorized as "General" — the physical dimensions above will determine which suits your embouchure and playing style better.