Giardinelli 3M vs Schilke 38D
The Giardinelli 3M has a wider cup diameter.
Mouthpiece A
Giardinelli 3M
• Baritone / Euphonium
Cup diameter26.30 mm / 1.0354 in
Cup depthMedium
Rim width—
Throat diameter6.40 mm / 0.2520 in
Backbore1/4" (.250)
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Schilke 38D
• Baritone / Euphonium
Cup diameter19.73 mm / 0.7768 in
Cup depthMedium
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Cup Diameter
The Giardinelli 3M has a cup diameter of 26.30 mm / 1.0354 in compared to 19.73 mm / 0.7768 in on the Schilke 38D — a difference of 6.57 mm / 0.2587 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
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.