Bach 5B vs Schilke 13A4a
The Schilke 13A4a has a wider cup diameter, the Bach 5B features a deeper cup.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
Bach 5B
• Trumpet
Rim width—
vs
Mouthpiece B
Schilke 13A4a
• Trumpet
Rim width—
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.