Which has a bigger cup — Bach 5C or GR Technologies 62M?

The Bach 5C has a cup diameter of 16.25 mm / 0.6398 in compared to 15.75 mm / 0.6201 in on the GR Technologies 62M — a difference of 0.50 mm / 0.0197 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 5C and GR Technologies 62M?

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

Bach 5C vs GR Technologies 62M

Name: GR Technologies 62M
Brand: GR Technologies

The Bach 5C has a wider cup diameter.

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

The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.

Mouthpiece A

Bach 5C

• Trumpet

Throat diameter3.66 mm / 0.1441 in

Best suited for

🎵All-round versatile — balanced cup for general playing

Mouthpiece B

GR Technologies 62M

• Trumpet

Throat diameter—

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.