Which has a bigger cup — Bach 11A or Bach 11B?

Both mouthpieces have virtually identical cup diameters at 15.70 mm / 0.6181 in.

How does cup depth compare between Bach 11A and Bach 11B?

The Bach 11A has a very deep cup while the Bach 11B has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 11A vs Bach 11B

Name: Bach 11B
Brand: Bach

the Bach 11A features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.

Mouthpiece A

Bach 11A

• Cornet

Material—

Mouthpiece B

Bach 11B

• 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.