Bach 12E vs Conn Imp. Precision 5
the Conn Imp. Precision 5 features a deeper cup.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Bach 12E
• Trombone
Backbore—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Conn Imp. Precision 5
• Trombone
GeneralBackbore—
Best suited for
Connstellation-equipped tenor trombone
Designed for Connstellation 24I/25I
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.