Bach 12B vs Bach 20C
The Bach 12B has a wider cup diameter, the Bach 12B features a deeper cup.
Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.
Mouthpiece A
Bach 12B
• Cornet
Material—
vs
Mouthpiece B
Bach 20C
• Cornet
Material—
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.