Bach 3C vs GR Technologies E65MX
The GR Technologies E65MX has a wider cup diameter, the GR Technologies E65MX features a deeper cup.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Bach 3C
• Trumpet
Backbore—
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
GR Technologies E65MX
• Trumpet
Backbore—
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.