Conn Precision 4 vs Kelly 5C-BUGLE
The Kelly 5C-BUGLE has a wider cup diameter, the Kelly 5C-BUGLE features a deeper cup.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Conn Precision 4
• Trumpet
GeneralCup depthMedium
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 5C-BUGLE
• Trumpet
GeneralCup depthVery deep
Best suited for
High-volume projection — open throat for power
Mid-range bugle use
Cup Depth
The Kelly 5C-BUGLE has a very deep cup while the Conn Precision 4 has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Which is better?
Both mouthpieces are categorized as "General" — the physical dimensions above will determine which suits your embouchure and playing style better.