Bach 7 vs Bach 8½BW
the Bach 7 features a deeper cup.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach 7
• Baritone / Euphonium
Cup diameter24.75 mm / 0.9744 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bach 8½BW
• Baritone / Euphonium
Cup diameter24.75 mm / 0.9744 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 24.75 mm / 0.9744 in.
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.