Bruno Tilz 214-4 MSG vs Bruno Tilz 306-2 C
the Bruno Tilz 214-4 MSG has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bruno Tilz 214-4 MSG
• Trombone
CatalogCup diameter26.00 mm / 1.0236 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bruno Tilz 306-2 C
• Trombone
CatalogCup diameter26.00 mm / 1.0236 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 26.00 mm / 1.0236 in.
Which is better?
Both mouthpieces are categorized as "Catalog" — the physical dimensions above will determine which suits your embouchure and playing style better.