Conn Imp. Precision 3A vs Conn Imp. Precision 4
the Conn Imp. Precision 4 features a deeper cup.
Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.
Mouthpiece A
Conn Imp. Precision 3A
• Trombone
GeneralMaterialSilver-plated brass
Best suited for
General trombone
Good round tone all-around
vs
Mouthpiece B
Conn Imp. Precision 4
• Trombone
OrchestralMaterialSilver-plated brass
Best suited for
Bass trombone / large bore tenor
Full rich deep tone
Material
Both mouthpieces share the same listed material (Silver-plated brass).
Which is better?
The Conn Imp. Precision 3A is designed for general playing, while the Conn Imp. Precision 4 targets orchestral use. Your best choice depends on your musical context.