Bach 3C vs Bob Reeves Piccolo 40/B/692
The Bach 3C has a wider cup diameter, the Bob Reeves Piccolo 40/B/692 features a deeper cup.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach 3C
• Trumpet
Cup diameter16.30 mm / 0.6417 in
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Bob Reeves Piccolo 40/B/692
• Trumpet
Cup diameter15.88 mm / 0.6252 in
Cup Diameter
The Bach 3C has a cup diameter of 16.30 mm / 0.6417 in compared to 15.88 mm / 0.6252 in on the Bob Reeves Piccolo 40/B/692 — a difference of 0.42 mm / 0.0165 in. A wider cup generally produces a fuller, darker tone but requires more air support.
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.