Which has a bigger cup — GR Technologies 3HC* or GR Technologies 3MS?

Both mouthpieces have virtually identical cup diameters at 16.76 mm / 0.6598 in.

How does cup depth compare between GR Technologies 3HC* and GR Technologies 3MS?

The GR Technologies 3HC* has a deep cup while the GR Technologies 3MS has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

GR Technologies 3HC* vs GR Technologies 3MS

Name: GR Technologies 3MS
Brand: GR Technologies

the GR Technologies 3HC* features a deeper cup.

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

Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.

Mouthpiece A

GR Technologies 3HC*

• Trumpet

Material—

Mouthpiece B

GR Technologies 3MS

• Trumpet

Material—

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.