Conn Imp. Precision 2 vs Kelly 3C
The Kelly 3C has a wider cup diameter, the Conn Imp. Precision 2 features a deeper cup.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Conn Imp. Precision 2
• Cornet
GeneralCup depth
Best suited for
Players wanting volume; narrower rim than Model 1
Plenty of volume; big tone
vs
Mouthpiece B
Kelly 3C
• Cornet
GeneralCup depthVery deep
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
All-purpose mid-range
Cup Depth
The Conn Imp. Precision 2 has a — cup while the Kelly 3C has a very deep 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.