Conn Imp. Precision 4 vs Conn Precision 4
Both mouthpieces share similar core dimensions — the differences are in the details.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Conn Imp. Precision 4
• Trombone
OrchestralCup depth
Best suited for
Bass trombone / large bore tenor
Full rich deep tone
vs
Mouthpiece B
Conn Precision 4
• Trombone
OrchestralCup depth
Best suited for
Bass trombone
Full rich deep tone quality
Cup Depth
Both mouthpieces share a — cup depth, so the sound character from depth alone will be very similar.
Which is better?
Both mouthpieces are categorized as "Orchestral" — the physical dimensions above will determine which suits your embouchure and playing style better.