Bach 1½C vs Conn Precision 2
The Bach 1½C has a wider cup diameter, the Conn Precision 2 features a deeper cup.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
Bach 1½C
• Trumpet
Rim width—
vs
Mouthpiece B
Conn Precision 2
• Trumpet
GeneralRim width—
Best suited for
Players wanting plenty of volume; medium rim
Full volume; big tone
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.