Bach 12C vs Conn Imp. Precision 2
the Conn Imp. Precision 2 features a deeper cup.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bach 12C
• Trombone
Throat diameter5.85 mm / 0.2303 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Conn Imp. Precision 2
• Trombone
LeadThroat diameter—
Best suited for
Solo; high register
Big bright tone; excellent solo
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.