Bach 3F vs Monette Cornet B3D S1
Both mouthpieces share similar core dimensions — the differences are in the details.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Bach 3F
• Cornet
Cup depthVery shallow
vs
Mouthpiece B
Monette Cornet B3D S1
• Cornet
Cup depthVery shallow
Cup Depth
Both mouthpieces share a very shallow 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.