Detail 01
.658 inch cup diameter
Medium-small rim. Less lip inside the cup than a 14, which favors range over sheer volume of sound.
Product detailSKU #1275776904020
SchilkeStandard Series Cornet Mouthpiece Group I in Gold 12A4 Gold
1/8
Independent shopping perspective
The Korena take
Gold-plated Schilke 12A4 cornet mouthpiece: .658" cup, shallow A cup, semi-flat #4 rim, open C backbore. For cornet players chasing upper-register endurance.
Strong match
Who this is for
- Lead and upper-register cornet work in brass band or big band
- Players wanting endurance from a flat, cushioned rim
- Cornetists who find the 12A4a's tight backbore too restrictive
Consider the trade-offs
When to look elsewhere
- Players wanting a deep, dark traditional cornet tone
- Trumpet players — this is a cornet shank
- Beginners still building embouchure on a medium-deep cup
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
Shallow A cup
Less air volume in the cup. Brightens the sound and makes high notes speak with less effort.
Detail 03
Number 4 semi-flat rim
Wider, flatter bearing surface spreads pressure over more lip. Buys endurance, costs some flexibility.
Detail 04
27 throat
Tighter bore than the 26 throats elsewhere in the line. More resistance to push against, easier to control softly.
Detail 05
Standard C backbore
More open than the a-backbore on the 12A4a. Freer blow and a broader sound at the cost of some resistance.
Detail 06
Gold plating
Different surface feel against the lip than silver and a different wear pattern over years of play.
Final check
Know before you order
- 01Cornet shank — confirm your cornet's receiver, and note it will not fit a trumpet
- 02Sold as the mouthpiece alone; no pouch, case, or brush included
- 03Jumping to a shallower cup changes intonation tendencies — expect an adjustment period
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will this fit my trumpet?
No. It is a cornet mouthpiece and the shank is cut for a cornet receiver. Schilke's trumpet models are sold separately.
02What's the difference between the 12A4 and the 12A4a?
Same rim and cup. The 12A4 uses a standard C backbore, which blows more openly; the 12A4a's tight a-backbore adds resistance, endurance, and range.
03Is this a good first mouthpiece?
The shallow A cup is aimed at upper-register work. Developing players usually get further on a fuller C cup like the 13 before moving to a shallow one.
04Why does the gold cost more than the silver models?
Gold plating is the premium finish in the Schilke line. The rim, cup, throat, and backbore dimensions are identical to the plated-silver version.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
5 detailsOther
- Category Source
- detail
- Tier
- new
- Korena Special
- false
- Source Id
- site51275776904020
- Prop65
- WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer, and to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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