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

The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.

Mouthpiece A

GR Technologies 3HC*

• Trumpet

Rim width—

Mouthpiece B

GR Technologies 3MS

• Trumpet

Rim width—

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.