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