Which has a bigger cup — Bach 2½C or Giardinelli 3M?

The Giardinelli 3M has a cup diameter of 17.00 mm / 0.6693 in compared to 16.40 mm / 0.6457 in on the Bach 2½C — a difference of 0.60 mm / 0.0236 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 2½C and Giardinelli 3M?

Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.

Bach 2½C vs Giardinelli 3M

Name: Giardinelli 3M
Brand: Giardinelli

The Giardinelli 3M has a wider cup diameter.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.

Mouthpiece A

Bach 2½C

• Cornet

Finish—

Best suited for

🎵All-round versatile — balanced cup for general playing

Mouthpiece B

Giardinelli 3M

• Cornet

Finish—

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.