Bruno Tilz 306-5 GS vs Conn Precision 1
the Conn Precision 1 features a deeper cup.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bruno Tilz 306-5 GS
• Trombone
CatalogCup diameter26.00 mm / 1.0236 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Conn Precision 1
• Trombone
OrchestralCup diameter—
Best suited for
Large bore trombones; symphony work
Good clear tone; large bore symphonic
Which is better?
The Bruno Tilz 306-5 GS is designed for catalog playing, while the Conn Precision 1 targets orchestral use. Your best choice depends on your musical context.