Which has a bigger cup — Bach 5C or GR Technologies E62M?

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 E62M — 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 E62M?

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

Bach 5C vs GR Technologies E62M

Name: GR Technologies E62M
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 taper behind the throat leading to the shank. Affects projection and tone character.

Mouthpiece A

Bach 5C

• Trumpet

Backbore—

Best suited for

🎵All-round versatile — balanced cup for general playing

Mouthpiece B

GR Technologies E62M

• 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.