Bach 1 vs GR Technologies 66.5MS
The Bach 1 has a wider cup diameter, the Bach 1 features a deeper cup.
Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.
Mouthpiece A
Bach 1
• Trumpet
Finish—
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
GR Technologies 66.5MS
• Trumpet
Finish—
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.