Bach 18 vs Yamaha HR-34B
The Yamaha HR-34B has a wider cup diameter, the Bach 18 features a deeper cup, the Bach 18 has a larger throat opening.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Bach 18
• French Horn
Cup depthMedium
Best suited for
All-round versatile — balanced cup for general playing
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha HR-34B
• French Horn
Cup depthShallow
Best suited for
High-volume projection — open throat for power
Cup Depth
The Bach 18 has a medium cup while the Yamaha HR-34B 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.