Bach 12E vs Bruno Tilz 306-5 GS
The Bruno Tilz 306-5 GS has a wider cup diameter, the Bruno Tilz 306-5 GS features a deeper cup, the Bruno Tilz 306-5 GS has a larger throat opening.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
Bach 12E
• Trombone
Rim width—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bruno Tilz 306-5 GS
• Trombone
CatalogRim width—
Best suited for
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.