Which has a bigger cup — Bach 3B or Bach 3C?

Both mouthpieces have virtually identical cup diameters at 16.30 mm / 0.6417 in.

How does cup depth compare between Bach 3B and Bach 3C?

The Bach 3B has a deep cup while the Bach 3C has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 3B vs Bach 3C

Name: Bach 3C
Brand: Bach

the Bach 3B 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 3B

• Trumpet

Material—

Mouthpiece B

Bach 3C

• Trumpet

Material—

Best suited for

🎵All-round versatile — balanced cup for general playing

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.