Conn Imp. Precision 4 vs Conn Precision 4
Both mouthpieces share similar core dimensions — the differences are in the details.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Conn Imp. Precision 4
• Trombone
OrchestralThroat diameter—
Best suited for
Bass trombone / large bore tenor
Full rich deep tone
vs
Mouthpiece B
Conn Precision 4
• Trombone
OrchestralThroat diameter—
Best suited for
Bass trombone
Full rich deep tone quality
Which is better?
Both mouthpieces are categorized as "Orchestral" — the physical dimensions above will determine which suits your embouchure and playing style better.