Detail 01
.658 inch cup diameter
Medium-small. Less lip inside the rim than a 13 or 14, which tightens control up high.
Product detailSKU #1275776903990
SchilkeStandard Series Cornet Mouthpiece Group I in Gold 12A4a Gold
1/8
Independent shopping perspective
The Korena take
A shallow-cup cornet mouthpiece aimed at range and endurance rather than the traditional dark cornet sound. Gold plated, .658 inch rim, tight backbore.
Strong match
Who this is for
- Cornet players who need a stronger, steadier upper register
- Trumpet doublers wanting a cornet piece that feels familiar
- Long shows where endurance matters more than tonal depth
Consider the trade-offs
When to look elsewhere
- Traditional dark brass-band tone — the funnel E cups do that
- Students still building a full sound on a standard cup
- Trumpet players; the cornet shank will not fit a trumpet
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
Quick, bright response and easier high notes. You trade away the round, dark color cornet is usually chosen for.
Detail 03
Tight a-backbore
More resistance behind the throat. Notes slot firmly, and blowing feels tighter than an open c-backbore.
Detail 04
Number 4 semi-flat rim
Wider, flatter contour spreads pressure over more lip. Endurance improves; extreme flexibility gets slightly harder.
Detail 05
27 throat
Narrower than the 26 throat on Schilke's standard cornet models, adding to the overall resistance.
Detail 06
Gold plating
Finish only. Dimensions match the silver 12A4a, so pick on feel and skin sensitivity.
Final check
Know before you order
- 01Cornet shank only — it will not seat in a trumpet
- 02Sold as the mouthpiece alone, no pouch or case
- 03If you double, matching rim size across horns makes the switch far easier
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will this fit my trumpet?
No. This is a cornet mouthpiece with a cornet shank. Trumpet receivers take a different taper.
02What is the difference between the 12A4a and the 12A4?
Same cup and rim. The 12A4 uses the standard c-backbore, which blows more openly. The 12A4a uses the tight a-backbore for more resistance and range.
03Is this right for traditional brass band sound?
Not really. A shallow A cup is bright and quick. For the round, dark cornet tone, the deep funnel cups like the 11E or 8E2 fit better.
04Does gold plating play differently from silver?
The rim, cup and backbore are identical. What changes is surface feel under the lip and how your skin reacts to the plating.
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
- site51275776903990
- 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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