Bach 1¼C vs GR Technologies 3MX
The Bach 1¼C has a wider cup diameter, the GR Technologies 3MX features a deeper cup.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Bach 1¼C
• Trumpet
Cup depthMedium
vs
Mouthpiece B
GR Technologies 3MX
• Trumpet
Cup depthDeep
Cup Depth
The GR Technologies 3MX has a deep cup while the Bach 1¼C has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
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.