Detail 01
11A4
11 is the rim size, A is the cup depth, 4 is the backbore. Numbers before the letter set rim diameter.
Product detailSKU #1274115035203
YamahaStandard Trumpet Mouthpiece 11A4
1/8
Independent shopping perspective
The Korena take
Yamaha's standard-line trumpet mouthpiece in the 11A4 size — a shallow cup on a medium rim, aimed at lead and upper-register playing.
Strong match
Who this is for
- Lead trumpet in big band or commercial sections
- Players who fade above the staff on a 7C
- Doubling on a second mouthpiece for high work
Consider the trade-offs
When to look elsewhere
- Symphonic or concert-band players needing a full, dark core
- Beginners still building an embouchure on a 7C
- Anyone wanting one mouthpiece for all playing situations
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
Comparable to a Bach 7E
Roughly 7C rim territory with a much shallower cup, so it plays like a lead piece, not a general one.
Detail 03
Shallow cup
Less air volume behind the lips. Upper register comes easier and the tone brightens and cuts through a section.
Detail 04
Standard series
Yamaha's non-custom line. Production tolerances and a plain finish, priced below the custom and signature pieces.
Detail 05
Same 11 rim as the 11B4 and 11C4
You can move to a deeper cup later and keep the same rim feel, which shortens the adjustment period.
Detail 06
$54.99
Mid-range mouthpiece money. Roughly a third of what boutique and custom-shop pieces run.
Final check
Know before you order
- 01Shallow cups tire an underdeveloped embouchure fast — this is a supplement, not a first mouthpiece
- 02Cup depth changes intonation; expect to relearn your tuning tendencies
- 03No case or pouch assumed — budget for a mouthpiece pouch separately
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What Bach mouthpiece is the 11A4 like?
A Bach 7E. Similar rim territory to a 7C but with a considerably shallower cup, which is why it favors the upper register over a broad concert sound.
02Is this good for a beginner?
No. A shallow cup rewards a developed embouchure and punishes an unformed one. Start on a 7C-equivalent like the 11C4 and add this later.
03Will it help me play higher?
It makes the upper register easier to reach, but it is not a substitute for chops. Range still comes from air and embouchure development.
04What does the 4 mean?
It is the backbore designation. Within Yamaha's numbering the digits before the letter set rim size and the letter sets cup depth; the trailing number covers the backbore.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
4 detailsOther
- Category Source
- detail
- Tier
- new
- Korena Special
- false
- Source Id
- site51274115035203
Worth comparing
1 of 12
More from Yamaha
1 of 8
