GR Technologies 63S vs Marcinkiewicz E14B. Shew #1
The Marcinkiewicz E14B. Shew #1 has a wider cup diameter, the Marcinkiewicz E14B. Shew #1 features a deeper cup.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
GR Technologies 63S
• Trumpet
Rim width—
Best suited for
Lead / commercial — shallow cup for brightness and range
vs
Mouthpiece B
Marcinkiewicz E14B. Shew #1
• Trumpet
Rim width—
Best suited for
Orchestral playing — large cup for full, dark tone
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.