Bach 1 vs Bob Reeves RP5
The Bach 1 has a wider cup diameter, the Bach 1 features a deeper cup.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bach 1
• Trumpet
Throat diameter3.66 mm / 0.1441 in
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Bob Reeves RP5
• Trumpet
Throat diameter—
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.