Detail 01
Shallow A cup
Less air volume behind the lips. Brighter, more cutting sound and easier high notes, at the cost of low-register depth.
Product detailSKU #1275776904756
SchilkeStandard Series Trumpet Mouthpiece in Silver Group II 15A4 Silver
Independent shopping perspective
The Korena take
Silver-plated Schilke 15A4 trumpet mouthpiece: wide rim, shallow cup, tight backbore. For players who live above the staff and need endurance up there.
Strong match
Who this is for
- Lead trumpet in big band or show pit work
- Players chasing a brighter, more cutting sound
- High-register work where a shallow cup helps endurance
Consider the trade-offs
When to look elsewhere
- Orchestral or legit playing that wants a dark, broad tone
- Beginners still building a low and middle register
- Players who find wide rims tiring on long gigs
What matters in use
The specifications, translated
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 02
17.14mm (.675") cup diameter
A larger diameter than typical lead pieces. More lip inside the cup, so it needs developed chops to control.
Detail 03
27 throat
A tighter bore through the mouthpiece. Builds back-pressure, which helps high notes speak but takes more effort at full volume.
Detail 04
Tight A backbore
Narrows the air path past the throat. Adds resistance and brilliance rather than spread and volume.
Detail 05
Number 4 semi-flat rim
Flatter contour spreads pressure across the lip instead of biting into one point, so it stays comfortable when you're pushing high.
Detail 06
Silver plating
Slightly grippier and warmer-feeling than gold. Standard finish, easy to polish, but a problem if you react to silver.
Final check
Know before you order
- 01Mouthpiece only — no case, pouch or brush included
- 02Switching cup depth changes your pitch centre; allow adjustment time
- 03Wide-plus-shallow is a specialist combination, not a general-purpose upgrade
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Is this a lead mouthpiece?
It's built for upper-register playing — shallow cup, tight throat and backbore, with a rim contour meant to stay comfortable high up. That's lead-piece territory.
02Will it fit my trumpet?
It's a standard-taper trumpet mouthpiece, so it fits normal trumpet and cornet-family receivers that take a trumpet shank.
03How is it different from the 16B4?
The 16B4 uses a different cup and rim size within the same Standard Series. The 15A4's shallow A cup and tight backbore point it at high playing.
04Can a student use it?
You can, but it works against you early on. The shallow cup thins out the low and middle register while you're still building tone and range.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Silver
1 detailsOther
- 15a4a
- 17.14mm, .675 inch cup diameter; 27 throat. A larger diameter mouthpiece with a shallow A cup and tight a-backbore for upper register playing. Number 4 semi-flat rim offers comfort in upper register.
