Bach 18 vs Conn Imp. Precision 2
the Conn Imp. Precision 2 features a deeper cup.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Bach 18
• Tuba
Cup depthMedium
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Conn Imp. Precision 2
• Tuba
GeneralCup depth
Best suited for
BBb bass / sousaphone general
Full rich tone in all registers
Cup Depth
The Conn Imp. Precision 2 has a — cup while the Bach 18 has a medium 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.