Bach 30CB vs Bach 6½AL (large shank)
The Bach 30CB has a wider cup diameter, the Bach 30CB features a deeper cup.
Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.
Mouthpiece A
Bach 30CB
• Trombone
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Bach 6½AL (large shank)
• Trombone
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
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.