Conn Imp. Precision 5 vs Conn Precision 3A
the Conn Precision 3A features a deeper cup.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Conn Imp. Precision 5
• Trombone
GeneralThroat diameter—
Best suited for
Connstellation-equipped tenor trombone
Designed for Connstellation 24I/25I
vs
Mouthpiece B
Conn Precision 3A
• Trombone
GeneralThroat diameter—
Best suited for
General trombone use
Good round tone in all registers; all-around
Which is better?
Both mouthpieces are categorized as "General" — the physical dimensions above will determine which suits your embouchure and playing style better.