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

The Giardinelli 3VM has a cup diameter of 17.00 mm / 0.6693 in compared to 16.30 mm / 0.6417 in on the Bach 3C — a difference of 0.70 mm / 0.0276 in. A wider cup generally produces a fuller, darker tone but requires more air support.

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

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

Bach 3C vs Giardinelli 3VM

Name: Giardinelli 3VM
Brand: Giardinelli

The Giardinelli 3VM has a wider cup diameter.

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

The taper behind the throat leading to the shank. Affects projection and tone character.

Mouthpiece A

Bach 3C

• Trumpet

Backbore—

Best suited for

🎵All-round versatile — balanced cup for general playing

Mouthpiece B

Giardinelli 3VM

• Trumpet

Backbore—

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.