Bob Reeves Piccolo 40/D/X vs Schilke 13A4a
The Schilke 13A4a has a wider cup diameter, the Bob Reeves Piccolo 40/D/X features a deeper cup.
Mouthpiece A
Bob Reeves Piccolo 40/D/X
• Trumpet
Cup diameter15.88 mm / 0.6252 in
Cup depthDeep
Rim width—
Throat diameter—
BackboreX
Finish—
Material—
vs
Mouthpiece B
Schilke 13A4a
• Trumpet
Cup diameter16.76 mm / 0.6598 in
Cup depthShallow
Rim width—
Throat diameter3.66 mm / 0.1441 in
Backbore27
Finish—
Material—
Cup Diameter
The Schilke 13A4a has a cup diameter of 16.76 mm / 0.6598 in compared to 15.88 mm / 0.6252 in on the Bob Reeves Piccolo 40/D/X — a difference of 0.88 mm / 0.0346 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bob Reeves Piccolo 40/D/X has a deep cup while the Schilke 13A4a has a shallow 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.