Bach 3C vs Bob Reeves 40/SV/692sL
The Bach 3C has a wider cup diameter, the Bach 3C features a deeper cup.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bach 3C
• Trumpet
Throat diameter3.66 mm / 0.1441 in
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Bob Reeves 40/SV/692sL
• Trumpet
Throat diameter—
Best suited for
Lead / commercial — shallow cup for brightness and range
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.