Bob Reeves 40/B/s vs Giardinelli 10B
The Giardinelli 10B has a wider cup diameter.
Mouthpiece A
Bob Reeves 40/B/s
• Cornet
Cup diameter15.88 mm / 0.6252 in
Cup depthVery deep
Rim width—
Throat diameter—
Backbores
Finish—
Material—
vs
Mouthpiece B
Giardinelli 10B
• Cornet
Cup diameter16.00 mm / 0.6299 in
Cup depthVery deep
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Cup Diameter
The Giardinelli 10B has a cup diameter of 16.00 mm / 0.6299 in compared to 15.88 mm / 0.6252 in on the Bob Reeves 40/B/s — a difference of 0.12 mm / 0.0047 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a very deep 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.