Which has a bigger cup — GR Technologies G66** or Schilke 13A4a?

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

How does cup depth compare between GR Technologies G66** and Schilke 13A4a?

The GR Technologies G66** has a medium cup while the Schilke 13A4a has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

GR Technologies G66** vs Schilke 13A4a

Name: Schilke 13A4a
Brand: Schilke

the GR Technologies G66** 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 G66**

• Trumpet

Material—

Mouthpiece B

Schilke 13A4a

• 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.