Detail 01
.660 inch cup diameter
Medium, and on the narrower side of Schilke's Group I. Comfortable for most players without the spread of a 14.

Independent shopping perspective
Gold-plated Schilke cornet mouthpiece, shallow A cup with an open c-backbore. For cornet players who want upper-register ease and a free-blowing feel.


Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.

Detail 01
Medium, and on the narrower side of Schilke's Group I. Comfortable for most players without the spread of a 14.
Detail 02
Less air to fill, so high notes come easier and the sound brightens. It is a lead voice, not a round cornet voice.
Detail 03
Free-blowing. The 13A4a shares this cup but uses a tight a-backbore that pushes back harder and narrows the sound.
Detail 04
Wider than the 26 throat on most models here, so more air passes through with less resistance behind the lips.
Detail 05
Wider bearing surface than a round rim, spreading pressure across more lip. That is what buys the endurance.
Detail 06
A surface finish only. Cup, rim and backbore dimensions match the silver 13A4 exactly.
Final check

Product questions
Straight answers to the questions shoppers most often ask about this product.
No. This is a cornet mouthpiece with a cornet shank. Schilke makes the same 13A4 dimensions in a trumpet version if that is what you need.
Identical .660 inch cup diameter, shallow A cup and number 4 rim. The 13A4a adds a tight a-backbore for a lead feel; this one uses the standard c-backbore and blows freely.
The cup, rim and backbore are the same as the silver 13A4. You are paying for the plating on the surface, not for different playing dimensions.
Not really. Schilke lists the 13, with its C cup and rounded number 3 rim, for students and developing players. The shallow A cup here assumes a set embouchure.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.