Conn Precision 4 vs Kelly 7C-BUGLE
The Kelly 7C-BUGLE has a wider cup diameter.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
Conn Precision 4
• Trumpet
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
vs
Mouthpiece B
Kelly 7C-BUGLE
• Trumpet
GeneralRim width—
Best suited for
All-round versatile — balanced cup for general playing
Standard bugle use
Which is better?
Both mouthpieces are categorized as "General" — the physical dimensions above will determine which suits your embouchure and playing style better.