Bach 6½AL (small shank) vs Kelly 5G-EU-SS
the Kelly 5G-EU-SS features a deeper cup.
Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.
Mouthpiece A
Bach 6½AL (small shank)
• Baritone / Euphonium
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
Kelly 5G-EU-SS
• Baritone / Euphonium
GeneralMaterial316 Surgical Stainless Steel
Best suited for
Orchestral playing — large cup for full, dark tone
Euphonium general use
Material
The Bach 6½AL (small shank) is described as unspecified, and the Kelly 5G-EU-SS as 316 Surgical Stainless Steel. Material affects mass, warmth, and how quickly the piece responds.
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.