Conn Imp. Precision 3 vs Conn Precision 1
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 3
• Trombone
GeneralCup depth
Best suited for
Large lips; all band work
Full round tone
vs
Mouthpiece B
Conn Precision 1
• Trombone
OrchestralCup depth
Best suited for
Large bore trombones; symphony work
Good clear tone; large bore symphonic
Cup Depth
Both mouthpieces share a — cup depth, so the sound character from depth alone will be very similar.
Which is better?
The Conn Imp. Precision 3 is designed for general playing, while the Conn Precision 1 targets orchestral use. Your best choice depends on your musical context.